View source for Sinn Féin

{{short description|Irish political party}}
{{other uses}}
{{Use Hiberno-English|date=November 2021}}
{{Use dmy dates|date=November 2021}}
{{Infobox political party
| abbreviation     = 
| name             = Sinn Féin
| logo             = Logo of the Sinn Féin.svg
| logo_size        = 250px
| colorcode        = {{Political party data|color}}
| founder          = [[Arthur Griffith]]<ref>{{cite book |last=O'Hegarty |first=P.S. |author-link=P. S. O'Hegarty |title=A History of Ireland under the Union, 1801 to 1922 |publisher=Methuen |location=London |date=1952 |page=634}}</ref>
| leader1_title    = [[President of Sinn Féin|President]]
| leader1_name     = [[Mary Lou McDonald]]
| leader2_title    = Vice president
| leader2_name     = [[Michelle O'Neill]]
| leader3_title    = Chairperson
| leader3_name     = [[Declan Kearney]]
| leader4_title    = {{nowrap|[[General Secretary]]}}
| leader4_name     = Sam Baker
| leader5_title    = Seanad leader
| leader5_name     = [[Conor Murphy]]
| founded          = {{plainlist|
*{{start date and age|1905|11|28|df=y}} (original form)
*{{start date and age|1970|01|17|df=y}} (current form)}}
| merger           = National Council<ref>Michael Laffan, ''The Resurrection of Ireland: The Sinn Féin Party 1916-23'', pp. 25-6, {{ISBN|0-521-67267-8}}.</ref><br />[[Cumann na nGaedheal (1900)|Cumann na nGaedheal]]<br />[[Dungannon Clubs]]
| headquarters     = 44 [[Parnell Square]], [[Dublin]], Ireland
| newspaper        = ''[[An Phoblacht]]''
| youth_wing       = [[Ógra Shinn Féin]]<ref>[https://ansionnachfionn.com/2018/03/31/sinn-fein-republican-youth-returns-to-better-known-title-ogra-shinn-fein/ Sinn Féin Republican Youth Returns To Better Known Title, Ógra Shinn Féin]. ''An Sionnach Fionn''. Published 31 March 2018. Retrieved 18 August 2018.</ref>
| wing1_title      = LGBT wing
| wing1            = Sinn Féin LGBTQIA+<ref>{{cite web |title=Sinn Féin LGBTQ |url=https://twitter.com/sinnfeinlgbtq |url-status=live |access-date=2021-08-13 |website=Twitter |archive-date=13 August 2021 |archive-url=https://web.archive.org/web/20210813080114/https://twitter.com/sinnfeinlgbtq}}</ref>
| wing2_title      = Overseas wing
| wing2            = [[Friends of Sinn Féin]]
| ideology         = <!--The ideology field has been discussed often and at length on the talk page. Please open a new discussion there before adding or changing anything.-->{{ubl|class=nowrap|
 |[[Irish republicanism]]
 |[[Democratic socialism]]
 |[[Left-wing nationalism]]{{sfn|Suiter|2016|page=[https://books.google.com/books?id=ozaTDAAAQBAJ&pg=PA134 134]}}
}}
| membership       = ~10,000<ref>{{cite news |last1=McQuinn |first1=Cormac |title=Sinn Féin to examine ‘limited’ success in increasing ‘activist’ membership |url=https://www.irishtimes.com/politics/2024/09/27/sinn-fein-to-examine-limited-success-in-increasing-activist-membership/ |work=The Irish Times |date=27 September 2024 |quote=The party is understood to have more than 10,000 members but there is a view in some quarters that some Sinn Féin members are not as active as others.}}</ref>
| membership_year  = 2024
| position         = {{nowrap|[[Centre-left politics|Centre-left]]<ref>{{cite web |date=2020-06-29 |title=Civil War politics finally ends in Irish parliament: Fianna Fáil & Fine Gael form coalition |url=https://macmillan.yale.edu/stories/civil-war-politics-finally-ends-irish-parliament-fianna-fail-fine-gael-form-coalition |access-date=2023-03-06 |website=The MacMillan Center |quote=[…] Sinn Féin’s progressive left-of-center program […]}}</ref>
 to [[Left-wing politics|left-wing]]{{sfn|Culloty|Suiter|2018|page=5}}}}
| european         = [[Unified European Left Group|Unified European Left]]
| international    = 
| europarl         = [[The Left in the European Parliament|The Left]]
| slogan           = ''Tosaíonn athrú anseo''<br>('Change starts here')<ref>{{cite web |title=Home |url=https://www.sinnfein.ie/?no-splash=true}}</ref>
| colours          = {{Color box|{{party color|Sinn Féin}}|border=darkgray}} Green
<!-- Values obtained from Wikidata; to edit, see https://www.wikidata.org/ -->| seats1_title     = [[Dáil Éireann]]
| seats1           = {{Political party data|seat composition bar|ms-lower-house}}
| seats2_title     = [[Seanad Éireann]]
| seats2           = {{Political party data|seat composition bar|ms-upper-house}}
| seats3_title     = [[European Parliament]]
| seats3           = {{Political party data|seat composition bar|EP}}
| seats4_title     = [[Northern Ireland Assembly]]
| seats4           = {{Composition bar|27|90|hex={{party color|Sinn Féin}}}}
| seats5_title     = {{nowrap|[[House of Commons of the United Kingdom|House of Commons]]}}<br />(NI seats)
| seats5           = {{composition bar|7|18|hex={{party color|Sinn Féin}}}} ([[abstentionist]])
| seats6_title     = [[Political composition of local government in the Republic of Ireland|Councillors in the Republic of Ireland]]
| seats6           = {{Composition bar|99|949|hex={{party color|Sinn Féin}}}}
| seats7_title     = [[Political composition of local government in the Republic of Ireland|Councils led in the Republic of Ireland]]
| seats7           = {{composition bar|2|31|hex={{party colour|Sinn Féin}}}}
| website          = {{Political party data|website}}
| country          = the Republic of Ireland
| country2         = Northern Ireland
| seats8           = {{Composition bar|144|462|hex={{party color|Sinn Féin}}}}
| seats8_title     = [[Local government in Northern Ireland]]<ref>{{cite news |title=NI council elections 2023: Sinn Féin largest party in NI local government |url=https://www.bbc.co.uk/news/uk-northern-ireland-65655547 |publisher=BBC News |date=20 May 2023}}</ref>
| seats9           = {{Composition bar|6|11|hex={{party colour|Sinn Féin}}}}
| seats9_title     = [[Local government in Northern Ireland|Councils led in Northern Ireland]]
}}

'''Sinn Féin''' ({{IPAc-en|ʃ|ɪ|n|_|ˈ|f|eɪ|n}} {{respell|shin|_|FAYN}};<ref>{{Cite encyclopedia |url=http://www.lexico.com/definition/Sinn+F%C3%A9in |title=Sinn Féin |dictionary=[[Lexico|Oxford Dictionaries]] UK English Dictionary |publisher=[[Oxford University Press]]}}{{dead link|date=September 2022|bot=medic}}{{cbignore|bot=medic}}</ref> {{IPA|ga|ˌʃɪn̠ʲ ˈfʲeːnʲ|lang|Ga-Sinn Féin.ogg}}; {{lit|[We] Ourselves}})<ref>{{cite book |title=Irish-English Dictionary |first=Patrick |last=Dinneen |author-link=Patrick S. Dinneen |year=1992 |orig-year=1927 |publisher=Irish Texts Society |place=Dublin |isbn=1-870166-00-0}}</ref> is an [[Irish republican]]<ref name="routledge.com">{{Cite web |title=New Sinn Féin: Irish Republicanism in the Twenty-First Century |url=https://www.routledge.com/New-Sinn-Fein-Irish-Republicanism-in-the-Twenty-First-Century/Maillot/p/book/9780415321976 |access-date=2023-03-04 |website=Routledge & CRC Press |language=en}}</ref> and [[democratic socialist]]<ref name="partiesandelections">{{Cite web |title=Parties and Elections in Europe |url=http://www.parties-and-elections.eu/ireland.html |access-date=2023-03-04 |website=www.parties-and-elections.eu}}</ref> political party active in both the [[Republic of Ireland]] and [[Northern Ireland]].

The [[History of Sinn Féin|original Sinn Féin organisation]] was founded in 1905 by [[Arthur Griffith]]. Its members founded the revolutionary [[Irish Republic]] and its parliament, the [[First Dáil]], and many of them were active in the [[Irish War of Independence]], during which the party was associated with the [[Irish Republican Army (1919–1922)]]. The party split before the [[Irish Civil War]] and again in its aftermath, giving rise to the two traditionally dominant parties of Irish politics: [[Fianna Fáil]], and [[Cumann na nGaedheal]] (which merged with smaller groups to form [[Fine Gael]]). For several decades the remaining Sinn Féin organisation was small and often without parliamentary representation. It continued its association with the [[Irish Republican Army (1922–1969)|Irish Republican Army]]. Another split in 1970 at the start of [[the Troubles]] led to the modern Sinn Féin party, with the other faction eventually becoming the [[Workers' Party (Ireland)|Workers' Party]].

During the [[The Troubles|Troubles]], Sinn Féin was associated with the [[Provisional Irish Republican Army]].{{sfn|Flackes|Elliott|1994}} For most of that conflict, it was affected by [[Section 31 of the Broadcasting Act|broadcasting bans in the Irish]] and [[1988–1994 British broadcasting voice restrictions|British media]]. Although the party sat on local councils, it maintained a policy of [[abstentionism]] for the British [[House of Commons of the United Kingdom|House of Commons]] and the Irish [[Dáil Éireann]], standing for election to those legislatures but pledging not to take their seats if elected. After [[Gerry Adams]] became party leader in 1983, electoral politics were prioritised increasingly. In 1986, the party dropped its abstentionist policy for the Dáil; some members formed [[Republican Sinn Féin]] in protest. In the 1990s, Sinn Féin—under the leadership of Adams and [[Martin McGuinness]]—was involved in the [[Northern Ireland peace process]]. This led to the [[Good Friday Agreement]] and created the [[Northern Ireland Assembly]], and saw Sinn Féin become part of the [[Consociationalism|power-sharing]] [[Northern Ireland Executive]]. In 2006, it co-signed the [[St Andrews Agreement]] and agreed to support the [[Police Service of Northern Ireland]].

Sinn Féin is the largest party in the Northern Ireland Assembly, having won the largest share of first-preference votes and the most seats in the [[2022 Northern Ireland Assembly election|2022 election]], the first time an [[Irish nationalist]] party has done so.<ref>{{cite news |title=NI election results 2022: Sinn Féin wins most seats in historic election |url=https://www.bbc.co.uk/news/uk-northern-ireland-61355419 |work=[[BBC News]] |date=7 May 2022 |access-date=7 May 2022 |archive-date=8 May 2022 |archive-url=https://web.archive.org/web/20220508001323/https://www.bbc.co.uk/news/uk-northern-ireland-61355419 |url-status=live }}</ref><ref>{{cite news |title=Assembly election: Sinn Féin wins most seats as parties urged to form Executive |url=https://www.irishtimes.com/news/politics/assembly-election-sinn-f%C3%A9in-wins-most-seats-as-parties-urged-to-form-executive-1.4872352 |orig-date=7 May 2022 |date=8 May 2022 |first1=Freya |last1=McClements |first2=Seanín |last2=Graham |first3=Brian |last3=Hutton |first4=Gerry |last4=Moriarty |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=7 May 2022 |archive-date=9 May 2022 |archive-url=https://web.archive.org/web/20220509052537/https://www.irishtimes.com/news/politics/assembly-election-sinn-f%C3%A9in-wins-most-seats-as-parties-urged-to-form-executive-1.4872352 |url-status=live }}</ref> Since 2024, [[Michelle O'Neill]] has served as the first ever Irish nationalist [[First Minister of Northern Ireland]].<ref>{{Cite news |title=Sinn Féin's Michelle O'Neill elected first ever nationalist First Minister of Northern Ireland |url=https://www.irishtimes.com/ireland/2024/02/03/powersharing-to-return-in-northern-ireland-with-sinn-feins-michelle-oneill-as-first-minister/ |access-date=2024-02-03 |newspaper=The Irish Times |language=en}}</ref> From 2007 to 2022, Sinn Féin was the second-largest party in the Assembly, after the [[Democratic Unionist Party]] (DUP), and its nominees served as [[First Minister and Deputy First Minister of Northern Ireland|Deputy First Minister]] in the Northern Ireland Executive.

In the House of Commons of the United Kingdom, Sinn Féin has held seven of Northern Ireland's seats since the [[2024 United Kingdom general election|2024 election]]; it continues its policy of abstentionism at Westminster. In [[Dáil Éireann]] it is the main opposition, having won the second largest number of seats in the [[2024 Irish general election|2024 election]]. The current [[president of Sinn Féin]] is [[Mary Lou McDonald]], who succeeded Gerry Adams in 2018.

==Name==
The phrase "Sinn Féin" is [[Irish language|Irish]] for "Ourselves" or "We Ourselves",<ref>{{cite book |author=Niall Ó Dónaill |editor=(advisory ed. [[Tomás de Bhaldraithe]]) |year=1977 |title=Foclóir Gaeilge-Béarla [Irish-English Dictionary] |publisher=[[An Gúm]] |location=Dublin |language=Irish |isbn=978-1-85791-037-7 |pages=533, 1095 |author-link=Niall Ó Dónaill}}</ref><ref name="MacDonncha12">MacDonncha (2005), p. 12.</ref> although it is frequently mistranslated as "ourselves alone" (from "''[[Sinn Féin (slogan)|Sinn Féin Amháin]]''", an early-20th-century slogan).<ref>{{cite web |url=http://multitext.ucc.ie/d/Ireland_politics__administration_1870-1914#12TheFirstSinnFeacuteinParty |title=The first Sinn Fein party |publisher=Multitext.ucc.ie |access-date=20 April 2010 |url-status=dead<!--fix-attempted--> |archive-url=https://web.archive.org/web/20100513033944/http://multitext.ucc.ie/d/Ireland_politics__administration_1870-1914#12TheFirstSinnFeacuteinParty |archive-date=13 May 2010}}</ref> The name is an assertion of Irish national sovereignty and self-determination, i.e., the [[Irish people]] governing themselves, rather than being part of a political union with Great Britain under the [[Parliament of the United Kingdom|Westminster Parliament]].

A split in January 1970, mirroring a split in the IRA, led to the emergence of two groups calling themselves Sinn Féin. The majority group, under the continued leadership of [[Tomás Mac Giolla]], became known as ''Official Sinn Féin'' or ''Sinn Féin (Gardiner Place)''. The minority group, led by [[Ruairí Ó Brádaigh]], became known as ''Provisional Sinn Féin'' or ''Sinn Féin (Kevin Street)''. ''Official Sinn Féin'' changed its name to ''Sinn Féin-The Workers' Party'' in 1977, and in 1982 it changed its name to ''[[Workers' Party (Ireland)|The Workers' Party]]''.<ref>{{cite news |last1=Duibhir |first1=Séan Ó |title=A guide to the many groups who've used the Sinn Féin name |url=https://www.rte.ie/brainstorm/2020/1125/1180350-sinn-fein-history-ireland/ |access-date=13 August 2025 |date=25 November 2020 |language=en}}</ref> As the "Official" group had dropped all mention of Sinn Féin from its name in 1982, the term "Provisional Sinn Féin" fell out of use, and in 1987 ''Provisional Sinn Féin'' registered as a political party in the Republic of Ireland under the name ''Sinn Féin''.<ref>{{cite news |last1=Duibhir |first1=Séan Ó |title=A guide to the many groups who've used the Sinn Féin name |url=https://www.rte.ie/brainstorm/2020/1125/1180350-sinn-fein-history-ireland/ |access-date=13 August 2025 |date=25 November 2020 |language=en}}</ref>

Sinn Féin members have been referred to colloquially as "Shinners", a term intended as a [[pejorative]].<ref>{{cite news |url=http://www.irishexaminer.com/viewpoints/columnists/michael-clifford/shinners-are-like-the-fianna-faacuteil-of-old-302311.html |title=Shinners are like the Fianna Fáil of old |first=Mick |last=Clifford |author-link=Michael Clifford (journalist) |date=13 December 2014 |newspaper=[[Irish Examiner]] |issn=1393-9564 |location=Cork |language=en-ie |archive-url=https://web.archive.org/web/20170222052635/http://www.irishexaminer.com/viewpoints/columnists/michael-clifford/shinners-are-like-the-fianna-faacuteil-of-old-302311.html |archive-date=22 February 2017 |url-status=live}}</ref><ref>{{cite news |url=https://www.telegraph.co.uk/comment/personal-view/3596371/The-Shinners-have-been-housecleaning-again.html |title=The Shinners have been housecleaning again |first=Kevin |last=Myers |author-link=Kevin Myers |date=14 September 2003 |newspaper=[[Sunday Telegraph]] |place=London |archive-url=https://web.archive.org/web/20180411115827/https://www.telegraph.co.uk/comment/personal-view/3596371/The-Shinners-have-been-housecleaning-again.html |archive-date=11 April 2018 |url-status=live}}</ref>

==History==
{{main|History of Sinn Féin}}

===1905–1922===
{{main|Easter Rising|1918 Irish general election|Irish War of Independence|Irish Civil War}}
[[File:Arthur Griffith (1871-1922).jpg|thumb|Arthur Griffith is credited as the main founder of the party]]
Sinn Féin was founded on 28 November 1905, when, at the first annual Convention of the National Council, [[Arthur Griffith]] outlined the Sinn Féin policy, "to establish in Ireland's capital a national legislature endowed with the moral authority of the Irish nation".<ref name="MacDonncha12"/> Its initial political platform was both [[Conservatism|conservative]] and [[Monarchism|monarchist]], advocating for an Anglo-Irish [[dual monarchy]] unified with the British [[The Crown|Crown]] (inspired by the [[Austro-Hungarian Compromise of 1867]]).{{sfn|Feeney|2002|pages=32–3}}{{sfn|Griffith|1904}} The party contested the [[1908 North Leitrim by-election]], where it secured 27% of the vote.{{sfn|Feeney|2002|pages=49–50}} Thereafter, both support and membership fell. At its 1910 {{lang|ga|ard fheis}} (party conference) attendance was poor, and there was difficulty finding members willing to take seats on the executive.{{sfn|Feeney|2002|pages=52–54}}

[[File:McGuinness- 1917 election.jpg|thumb|The campaign car of [[Joseph McGuinness]], who won the 1917 [[South Longford (UK Parliament constituency)|South Longford]] by-election whilst imprisoned. He was one of the first Sinn Féin MPs to be elected.]]

In 1914, Sinn Féin members, including Griffith, joined the anti-Redmond [[Irish Volunteers]], which was referred to by [[John Redmond|Redmondites]] and others as the "Sinn Féin Volunteers". Although Griffith himself did not take part in the [[Easter Rising]] of 1916, many Sinn Féin members who were members of the Volunteers and the [[Irish Republican Brotherhood]] did. Government and newspapers dubbed the Rising "the Sinn Féin Rising".{{sfn|Feeney|2002|pages=56–57}} After the Rising, [[Irish republicanism|republicans]] came together under the banner of Sinn Féin, and at the 1917 ''ard fheis'' the party committed itself for the first time to the establishment of an [[Irish Republic]]. In the [[1918 Irish general election|1918 general election]], Sinn Féin won 73 of Ireland's 105 seats, and in January 1919, its MPs assembled in Dublin and proclaimed themselves [[First Dáil|Dáil Éireann]], the parliament of Ireland. Sinn Féin candidate [[Constance Markievicz]] became the first woman elected to the [[House of Commons of the United Kingdom|United Kingdom House of Commons]]. However, in line with Sinn Féin [[abstentionist]] policy, she did not take her seat in the House of Commons.<ref>{{cite web |title=Archives – The First Women MPs |website=[[Parliament of the United Kingdom]] |url=https://www.parliament.uk/business/publications/parliamentary-archives/explore-guides-to-documentary-archive-/archives-highlights/archives-the-suffragettes/archives-the-first-women-in-parliament-1919-1945 |access-date=23 November 2018 |archive-date=7 October 2018 |archive-url=https://web.archive.org/web/20181007183548/https://www.parliament.uk/business/publications/parliamentary-archives/explore-guides-to-documentary-archive-/archives-highlights/archives-the-suffragettes/archives-the-first-women-in-parliament-1919-1945/ |url-status=live}}</ref>

The party supported the [[Irish Republican Army (1919–1922)|Irish Republican Army]] during the [[Irish War of Independence|War of Independence]], and members of the Dáil government negotiated the [[Anglo-Irish Treaty]] with the British government in 1921. In the Dáil debates that followed, the party divided on the Treaty. The pro-Treaty and anti-Treaty components (led by [[Michael Collins (Irish leader)|Michael Collins]] and [[Éamon de Valera]] respectively) managed to agree on a "Coalition Panel" of Sinn Féin candidates to stand in the [[1922 Irish general election|1922 general election]].<ref>{{cite web |url=https://www.oireachtas.ie/en/debates/debate/dail/1922-05-20/2 |title=NATIONAL COALITION PANEL JOINT STATEMENT. – Dáil Éireann (2nd Dáil) – Saturday, 20 May 1922 |website=Houses of the Oireachtas |date=20 May 1922 |access-date=4 November 2020 |archive-date=8 November 2020 |archive-url=https://web.archive.org/web/20201108080043/https://www.oireachtas.ie/en/debates/debate/dail/1922-05-20/2/ |url-status=live}}</ref> After the election, anti-Treaty members walked out of the Dáil, and pro- and anti-Treaty members took opposite sides in the ensuing [[Irish Civil War|Civil War]].<ref>{{cite web |title=1916 Easter Rising – Profiles: Sinn Féin |url=https://www.bbc.co.uk/history/british/easterrising/profiles/po18.shtml |website=BBC History |publisher=BBC |date=24 September 2014 |archive-url=https://web.archive.org/web/20150925060550/http://www.bbc.co.uk/history/british/easterrising/profiles/po18.shtml |archive-date=25 September 2015 |url-status=live}}</ref>

===1923–1970===
Pro-Treaty Dáil deputies and other Treaty supporters formed a new party, [[Cumann na nGaedheal]], on 27 April 1923 at a meeting in Dublin, where delegates agreed on a constitution and political programme.{{sfn|Gallagher|1985|loc=Front cover}} Cumann na nGaedheal went on to govern the new [[Irish Free State]] for nine years (it merged with two other organisations to form [[Fine Gael]] in 1933).<ref>Ruth Dudley Edwards and Bridget Hourican, ''An Atlas of Irish History'', Routledge, 2005, {{ISBN|978-0-415-27859-1}}, pp. 97–98.</ref> Anti-Treaty Sinn Féin members continued to boycott the Dáil. At a special ''Ard Fheis'' in March 1926, de Valera proposed that elected members be allowed to take their seats in the Dáil if and when the controversial [[Oath of Allegiance (Ireland)|Oath of Allegiance]] was removed. When his motion was defeated, de Valera resigned from Sinn Féin; on 16 May 1926, he founded his own party, [[Fianna Fáil]], which was dedicated to republicanising the Free State from within its political structures. He took most Sinn Féin [[Teachtaí Dála]] (TDs) with him.{{sfn|Coogan|2000|pages=77–78}} De Valera's resignation meant also the loss of financial support from America.<ref>The Times, ''Southern Irish Elections'', 6 June 1927.</ref> The rump Sinn Féin party could field no more than fifteen candidates,<ref name="Times270602">The Times, ''350 Candidates For 152 Seats'', 2 June 1927.</ref> and won only five seats in the [[June 1927 Irish general election|June 1927 general election]], a decline in support not seen since before 1916.{{sfn|Laffan|1999|page=443}}<ref name="Times270830">[[The Times]], ''Mr. Cosgrave and the Oath'', 30 August 1927.</ref> Vice-president and {{lang|la|[[de facto]]}} leader [[Mary MacSwiney]] announced that the party simply did not have the funds to contest [[September 1927 Irish general election|the second election called that year]], declaring "no true Irish citizen can vote for any of the other parties".<ref name="Times270830" /> Fianna Fáil came to power at the [[1932 Irish general election|1932 general election]] (to begin what would be an unbroken 16-year spell in government) and went on to long dominate politics in the independent Irish state.

An attempt in the 1940s to access funds that had been put in the care of the [[High Court (Ireland)|High Court]] led to the [[Sinn Féin Funds case]], which the party lost and in which the judge ruled that it was not the legal successor to the Sinn Féin of 1917.{{sfn|Laffan|1999|page=450}}

By the late 1940s, two decades removed from the Fianna Fáil split and now the Sinn Féin funds lost, the party was little more than a husk. The emergence of a popular new republican party, led by former IRA members, in [[Clann na Poblachta]], threatened to void any remaining purpose Sinn Féin had left. However, it was around this same time that the IRA leadership once again sought to have a political arm (the IRA and Sinn Féin had effectively no formal ties following the civil war).{{sfn|Gallagher|1985|p=94}} Following an IRA army convention in 1948, IRA members were instructed to join Sinn Féin en masse and by 1950 they had successfully taken total control of the party, with IRA army council member [[Paddy McLogan]] named as the new president of the party. As part of this rapprochement, it was later made clear by the army council that the IRA would dictate to Sinn Féin, and not the other way around.{{sfn|O'Brien|2019|loc=The next year, 1949, saw another development, also to become significant over time. Sinn Féin and the IRA reformed their alliance, Sinn Féin accepting that the IRA Army Council held the powers of the government of the Republic and as such was the 'supreme authority. Infiltration and control of Sinn Féin became IRA policy and in 1950 Paddy McLogan was elected Sinn Féin President. Within the IRA Tony Magan set about stamping his authority on the organisation, at times forcing out some of its most dedicated people, including Willie McGuinness, and winning broad if grudging support for his harshest disciplinary actions.}}{{sfn|Sanders|2011|page=16}}<ref>{{cite web |last=Ryan |first=Patrick |title='The Birth of the Provisionals – A Clash between Politics and Tradition' by Patrick Ryan (2001) |url=https://cain.ulster.ac.uk/othelem/organ/docs/ryan01.htm |date=2001 |website=Cain |quote=The precise nature of the relationship between the IRA and Sinn Féin had been outlined during an IRA / Sinn Féin summit on 13 May 1962 when a confrontation between erstwhile Sinn Féin president Paddy McLogan and the IRA army council over the termination of the movement's armed campaign had brought matters to ahead. It was now to be formally acknowledged that "the army council was the supreme government of the Republic and the supreme authority in the republican movement" and furthermore that Sinn Féin although an "autonomous and independent organisation" paradoxically had to ensure that its policy coincided at all times with that of the Army Council if it wished to remain a viable part of the republican movement. This definition of the subservient role to be played by Sinn Féin, although it led to some prominent resignations, McLogan and Tony Magan included, was largely representative of the general belief in the republican movement that politics was an alien concept, useful at times, but to be generally regarded with suspicion. |archive-date=1 February 2022 |archive-url=https://web.archive.org/web/20220201093202/https://cain.ulster.ac.uk/othelem/organ/docs/ryan01.htm |url-status=live }}</ref>
          
At the [[1955 United Kingdom general election]], two Sinn Féin candidates were elected to Westminster, and likewise, four members of Sinn Féin were elected to Leinster House in the [[1957 Irish general election]]. In December 1956, at the beginning of the IRA's [[Border campaign (Irish Republican Army)|Border Campaign (Operation Harvest)]], the Northern Ireland Government banned Sinn Féin under the [[Civil Authorities (Special Powers) Act (Northern Ireland) 1922|Special Powers Act]]; it would remain banned until 1974.{{sfn|Bourne|2018|pages=46–49}} By the end of the Border campaign five years later, the party had once again lost all national representation.{{sfn|Patterson|2006|page=180}} Through the 1960s, some leading figures in the movement, such as [[Cathal Goulding]], [[Seán Garland]], [[Billy McMillen]] and [[Tomás Mac Giolla]], moved steadily to the left, even to [[Marxism]], as a result of their own reading and thinking and contacts with the Irish and international left. This angered more traditional republicans, who wanted to stick to the national question and armed struggle.{{sfn|Hanley|Millar|2009|pages=70–148}} The Garland Commission was set up in 1967, to investigate the possibility of ending abstentionism. Its report angered the already disaffected traditional republican element within the party, notably [[Seán Mac Stíofáin]] and Ruairí Ó Brádaigh, who viewed such a policy as treason against the Irish Republic.{{sfn|White|2006|page=119}}

===1970–1975===
[[File:Ruairí Ó Brádaigh 2004.jpg|thumb|right|[[Ruairí Ó Brádaigh]] (pictured in 2004) was the president of Provisional Sinn Féin from 1970 until 1983.]]
Sinn Féin split in two at the beginning of 1970. On 11 January, the proposal to end abstentionism and take seats, if elected, in the Dáil, the [[Parliament of Northern Ireland]] and the Parliament of the United Kingdom was put before the members at the party's ''Ard Fheis''.{{sfn|Anderson|2002|page=186}} A similar motion had been adopted at an IRA convention the previous month, leading to the formation of a Provisional Army Council by Mac Stíofáin and other members opposed to the leadership. When the motion was put to the ''Ard Fheis'', it failed to achieve the necessary two-thirds majority. The Executive attempted to circumvent this by introducing a motion in support of IRA policy, at which point the dissenting delegates walked out of the meeting.<ref>Taylor (1998), p. 67</ref> These members reconvened at Kevin Barry Hall in [[Parnell Square]], where they appointed a Caretaker Executive with Ruairí Ó Brádaigh as chairman.{{sfn|White|2017|page=67}} The Caretaker Executive's first act was to pass a [[Resolution (debate)|resolution]] pledging allegiance to the 32-county Irish Republic and the Provisional Army Council.{{sfn|Mac Stíofáin|1975|page=150}} It also declared itself opposed to the ending of abstentionism, the drift towards "extreme forms of socialism", the failure of the leadership to defend the nationalist people of Belfast during the [[1969 Northern Ireland riots]], and the expulsion of traditional republicans by the leadership during the 1960s.<ref>[[J. Bowyer Bell]], ''The Secret Army: The IRA'', pp. 366–368.</ref>

At its October 1970 ''Ard Fheis'', delegates were informed that an IRA convention had been held and had regularised its structure, bringing to an end the "provisional" period.<ref>Peter Taylor, Provos, p. 87.</ref> By then, however, the label "Provisional" or "Provo" was already being applied to them by the media.{{sfn|Adams|1996|page=149}} The opposing, anti-abstentionist party became known as "Official Sinn Féin".{{sfn|Feeney|2002|page=252}} It changed its name in 1977 to "Sinn Féin—The Workers' Party",{{sfn|Hanley|Millar|2009|pages=70–148}} and in 1982 to "[[Workers' Party (Ireland)|The Workers' Party]]".{{sfn|Sinnott|1995|page=59}}

Because the "Provisionals" were committed to military rather than political action, Sinn Féin's initial membership was largely confined, in [[Danny Morrison (Irish republican)|Danny Morrison]]'s words, to men "over military age or women".{{sfn|Feeney|2002|pages=259–260}} A Sinn Féin organiser of the time in [[Belfast]] described the party's role as "agitation and publicity".{{sfn|Feeney|2002|pages=259–260}} New ''cumainn'' (branches) were established in Belfast, and a new newspaper, ''[[Republican News]]'', was published.{{sfn|Feeney|2002|page=261}} Sinn Féin took off as a protest movement after the introduction of [[Operation Demetrius|internment]] in August 1971, organising marches and pickets.{{sfn|Feeney|2002|page=271}} The party launched its platform, ''[[Éire Nua]]'' ("a New Ireland") at the 1971 ''Ard Fheis''.<ref>Taylor, p. 104.</ref> In general, however, the party lacked a distinct political philosophy. In the words of Brian Feeney, "Ó Brádaigh would use Sinn Féin ''ard fheiseanna'' (party conferences) to announce republican policy, which was, in effect, IRA policy, namely that Britain should leave the North or the 'war' would continue".{{sfn|Feeney|2002|pages=272}}

In May 1974, a few months after the [[Sunningdale Agreement]], the ban on Sinn Féin was lifted by the UK [[Secretary of State for Northern Ireland]].{{sfn|Bourne|2018|pages=46–49}} Sinn Féin was given a concrete presence in the community when the [[Chronology of Provisional Irish Republican Army actions (1970–79)#1975|IRA declared a ceasefire in 1975]]. 'Incident centres', manned by Sinn Féin members, were set up to communicate potential confrontations to the British authorities.<ref>Taylor pp. 165, 184.</ref>

From 1976, there was a broadcasting ban on Sinn Féin representatives in the Republic of Ireland, after the [[Minister for Posts and Telegraphs]], [[Conor Cruise O'Brien]], amended [[Section 31 of the Broadcasting Act]]. This prevented [[RTÉ]] interviewing Sinn Féin spokespersons under any circumstances, even where the subject was not related to the Northern Ireland conflict.{{sfn|Maillot|2005|page=75}} This lasted until 1994.

===1976–1983===
Political status for prisoners became an issue after the ending of the truce. Rees released the last of the internees, and ended '[[Special Category Status]]' for all prisoners convicted after 1 March 1976. This led first to the [[blanket protest]], and then to the [[dirty protest]].{{sfn|Feeney|2002|pages=277–279}} Around the same time, [[Gerry Adams]] began writing for ''Republican News'', calling for Sinn Féin to become more involved politically.{{sfn|Feeney|2002|page=275}} Over the next few years, Adams and those aligned with him would extend their influence throughout the republican movement and slowly marginalise Ó Brádaigh, part of a general trend of power in both Sinn Féin and the IRA shifting north.{{sfn|O'Brien|1995|pages=[https://archive.org/details/longwarirasinnfe00obri/page/n114 113]–}} In particular, Ó Brádaigh's part in the 1975 IRA ceasefire had damaged his reputation in the eyes of northern republicans.<ref>{{cite news |url=https://www.independent.co.uk/news/obituaries/ruairi-o-bradaigh-ira-leader-who-believed-fervently-in-armed-struggle-8648303.html |title=Ruairi O Bradaigh: IRA leader who believed fervently in armed struggle |date=6 June 2013 |first=David |last=McKittrick |author-link=David McKittrick |newspaper=[[The Independent]] |location=London |language=en |access-date=11 September 2017 |archive-url=https://web.archive.org/web/20181206214220/https://www.independent.co.uk/news/obituaries/ruairi-o-bradaigh-ira-leader-who-believed-fervently-in-armed-struggle-8648303.html |archive-date=6 December 2018 |url-status=live}}</ref>

The prisoners' protest climaxed with the [[1981 Irish hunger strike|1981 hunger strike]], during which striker [[Bobby Sands]] was elected Member of Parliament for [[Fermanagh and South Tyrone (UK Parliament constituency)|Fermanagh and South Tyrone]] as an [[Anti H-Block]] candidate. After his death on hunger strike, his seat was held, with an increased vote, by his election agent, [[Owen Carron]]. Two other Anti H-Block candidates were elected to [[Dáil Éireann]] in the [[1981 Irish general election|general election in the Republic]]. These successes convinced republicans that they should contest every election.{{sfn|Feeney|2002|pages=290–291}} Danny Morrison expressed the mood at the 1981 ''Ard Fheis'' when he said:
{{blockquote|Who here really believes we can win the war through the ballot box? But will anyone here object if, with a ballot paper in this hand and an [[ArmaLite|Armalite]] in the other, we take power in Ireland?<ref name="Taylor 1997, pp. 281–2">Taylor (1997), pp. 281–282.</ref>}}
This was the origin of what became known as the [[Armalite and ballot box strategy]]. Ó Brádaigh's chief policy, a plan for a federalised Irish state dubbed ''[[Éire Nua]]'', was dropped in 1982, and the following year Ó Brádaigh stepped down as president, and was replaced by Adams.{{sfn|Feeney|2002|page=321}}

=== 1983–1998===
[[File:Gerry Adams and Martin McGuinness.jpg|thumb|Under the political leadership of [[Gerry Adams]] and [[Martin McGuinness]] (pictured 2016), Sinn Féin adopted a reformist policy, eventually leading to the [[Good Friday Agreement]].]]
Under Adams' leadership electoral politics became increasingly important. In 1983 [[Alex Maskey]] was elected to [[Belfast City Council]], the first Sinn Féin member to sit on that body.{{sfn|Murray|Tonge|2005|page=153}} Sinn Féin polled over 100,000 votes in the [[1983 United Kingdom general election|Westminster elections that year]], and Adams won the [[Belfast West (UK Parliament constituency)|West Belfast]] seat that had been held by the [[Social Democratic and Labour Party]] (SDLP).{{sfn|Murray|Tonge|2005|page=153}} [[1985 Northern Ireland local elections#Overall|By 1985]] it had 59 seats on seventeen of the 26 Northern Ireland councils, including seven on Belfast City Council.{{sfn|Murray|Tonge|2005|page=155}}

The party began a reappraisal of the policy of abstention from the Dáil. At the 1983 ''Ard Fheis'' the constitution was amended to remove the ban on the discussion of abstentionism to allow Sinn Féin to run a candidate in the forthcoming European elections. However, in his address, Adams said, "We are an abstentionist party. It is not my intention to advocate change in this situation."{{sfn|Feeney|2002|page=326}} A motion to permit entry into the Dáil was allowed at the 1985 ''Ard Fheis'', but did not have the active support of the leadership, and it failed narrowly.{{sfn|Feeney|2002|page=328}} By October of the following year an IRA Convention had indicated its support for elected Sinn Féin TDs taking their seats. Thus, when the motion to end abstention was put to the ''Ard Fheis'' on 1 November 1986, it was clear that there would not be a split in the IRA as there had been in 1970.{{sfn|Feeney|2002|page=331}} The motion was passed with a two-thirds majority. Ó Brádaigh and about twenty other delegates walked out, and met in a Dublin hotel with hundreds of supporters to re-organise as [[Republican Sinn Féin]].{{sfn|Feeney|2002|page=333}}

In October 1988, the British Conservative government followed the Republic in banning broadcasts of Sinn Féin representatives. Prime Minister [[Margaret Thatcher]] said it would "deny terrorists the oxygen of publicity". Broadcasters quickly found ways around the ban, mainly by using actors to dub the voices of banned speakers. The legislation did not apply during election campaigns and under certain other circumstances. The ban lasted until 1994.<ref>{{cite news |title=The 'broadcast ban' on Sinn Féin |work=[[BBC News]] |first=Francis |last=Welch |date=5 April 2005 |url=https://news.bbc.co.uk/2/hi/4409447.stm |access-date=21 June 2013 |archive-date=26 July 2013 |archive-url=https://web.archive.org/web/20130726210043/http://news.bbc.co.uk/2/hi/4409447.stm |url-status=live}}</ref>

Tentative negotiations between Sinn Féin and the British government led to more substantive discussions with the SDLP in the 1990s. Multi-party negotiations began in 1994 in Northern Ireland, without Sinn Féin. The Provisional IRA declared a ceasefire in August 1994. Sinn Féin then joined the talks, but the [[Conservative Party (UK)|Conservative]] government under [[John Major]] soon came to depend on unionist votes to remain in power. It suspended Sinn Féin from the talks, and began to insist that the IRA decommission all of their weapons before Sinn Féin be re-admitted to the talks; this led to the IRA calling off its ceasefire. The new [[Labour Party (UK)|Labour]] government of [[Tony Blair]] was not reliant on unionist votes and re-admitted Sinn Féin, leading to another, permanent, ceasefire.{{sfn|Murray|Tonge|2005|pages=193–194}}

The talks led to the [[Good Friday Agreement]] of 10 April 1998, which set up an inclusive devolved government in Northern Ireland, and altered the Dublin government's constitutional claim to the whole island in [[Articles 2 and 3 of the Constitution of Ireland]]. Republicans opposed to the direction taken by Sinn Féin in the peace process formed the [[32 County Sovereignty Movement]] in the late 1990s.<ref>Independent Monitoring Commission, ''Twenty-first Report of the Independent Monitoring Commission'', The Stationery Office, 2009, {{ISBN|978-0-10-295967-3}}, p. 31.</ref>

===1998–2017===
[[File:Caoimhghín Ó Caoláin, 2019.jpg|thumb|200px|The election of [[Caoimhghín Ó Caoláin]] to the Dáil in 1997 was the first time in 75 years a Sinn Féin TD had taken their seat and marked a turning point in the party's history]]
At the [[1997 Irish general election]], [[Caoimhghín Ó Caoláin]] was elected to the Dáil. In doing so, he became the first person under the "Sinn Féin" banner to be elected to Leinster House since [[1957 Irish general election|1957]], and the first since 1922 to take their seat.<ref>{{cite news |url=https://www.bbc.co.uk/news/world-europe-51509076 |title=Irish election: Recalling when the Dáil was a Sinn Féin 'cold house' |date=16 February 2020 |work=[[BBC News]] |access-date=28 December 2020 |archive-date=17 February 2020 |archive-url=https://web.archive.org/web/20200217135203/https://www.bbc.co.uk/news/world-europe-51509076 |url-status=live}}</ref>{{sfn|White|2017|page=292}}{{sfn|Feeney|2002|page=10}} Ó Caoláin's entry to the Dáil marked the beginning of a continuous Sinn Féin presence in the Republic of Ireland's national political bodies.

The party expelled [[Denis Donaldson]], a party official, in December 2005, with him stating publicly that he had been in the employ of the British government as an agent since the 1980s. Donaldson told reporters that the British security agencies who employed him were behind the collapse of the Assembly and set up Sinn Féin to take the blame for it, a claim disputed by the British government.<ref>{{cite news |title=Sinn Féin man admits he was agent |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4536826.stm |work=[[BBC News]] |date=16 December 2005 |access-date=29 March 2007 |archive-url=https://web.archive.org/web/20070510112000/http://news.bbc.co.uk/1/hi/northern_ireland/4536826.stm |archive-date=10 May 2007 |url-status=live}}</ref> Donaldson was found fatally shot in his home in [[County Donegal]] on 4 April 2006, and a murder inquiry was launched.<ref>{{cite news |title=Donaldson murder scene examined |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4881628.stm |work=[[BBC News]] |date=6 April 2006 |access-date=29 March 2007 |archive-url=https://web.archive.org/web/20061223072458/http://news.bbc.co.uk/1/hi/northern_ireland/4881628.stm |archive-date=23 December 2006 |url-status=live}}</ref> In April 2009, the [[Real Irish Republican Army|Real IRA]] released a statement taking responsibility for the killing.<ref>{{cite news |url=http://www.irishtimes.com/newspaper/ireland/2009/0413/1224244556553.html |title=Real IRA claims responsibility for 2006 murder of Denis Donaldson |date=4 April 2009 |first=Dan |last=Keenan |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=17 December 2011 |archive-url=https://web.archive.org/web/20111026015604/http://www.irishtimes.com/newspaper/ireland/2009/0413/1224244556553.html |archive-date=26 October 2011 |url-status=live}}</ref>

When Sinn Féin and the Democratic Unionist Party (DUP) became the largest parties, by the terms of the Good Friday Agreement no deal could be made without the support of both parties. They nearly reached a deal in November 2004, but the DUP insisted on photographic or video evidence that [[decommissioning in Northern Ireland|decommissioning of IRA weapons]] had been carried out, which was unacceptable to Sinn Féin.<ref>{{cite news |url=https://www.theguardian.com/uk_news/story/0,3604,1358877,00.html |title=Paisley hints at movement on IRA |first=Angelique |last=Chrisafis |date=25 November 2004 |newspaper=[[The Guardian]] |location=London |access-date=28 March 2007 |archive-date=4 October 2021 |archive-url=https://web.archive.org/web/20211004111405/https://www.theguardian.com/uk/2004/nov/25/northernireland.northernireland |url-status=live}}</ref>

In April 2006, a number of members of Sinn Féin who believed the party was not committed enough to socialism split from the party and formed a new group called [[Éirígí]], which later became a (minor) political party in its own right.<ref name="Phoenix Daly">{{cite news |author=<!--Staff writer(s)/no by-line.--> |date=2 May 2019 |title=PROFILE: CLARE DALY TD |url=https://www.thephoenix.ie/article/profile-clare-daly-td/ |work=[[The Phoenix (magazine)|The Phoenix]] |location= |access-date=25 February 2022 |quote=the socialist republican grouping Éirígí...which split from [Sinn Féin] in 2006 because it was not fully socialist |url-access=subscription |archive-date=9 July 2021 |archive-url=https://web.archive.org/web/20210709184711/https://www.thephoenix.ie/article/profile-clare-daly-td/ |url-status=live}}</ref>

On 2 September 2006, Martin McGuinness publicly stated that Sinn Féin would refuse to participate in a shadow assembly at Stormont, asserting that his party would only take part in negotiations that were aimed at restoring a power-sharing government. This development followed a decision on the part of members of Sinn Féin to refrain from participating in debates since the Assembly's recall the previous May. The relevant parties to these talks were given a deadline of 24 November 2006 to decide upon whether or not they would ultimately form the executive.<ref>{{cite web |title=Sinn Féin rejects 'shadow' Assembly |url=http://www.rte.ie/news/2006/0902/northpolitics.html?rss |date=2 September 2006 |publisher=[[RTÉ News]] |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20080219045544/http://www.rte.ie/news/2006/0902/northpolitics.html?rss |archive-date=19 February 2008 |url-status=live}}</ref>

The 86-year Sinn Féin boycott of policing in Northern Ireland ended on 28 January 2007, when the ''Ard Fheis'' voted overwhelmingly to support the [[Police Service of Northern Ireland]] (PSNI).<ref>{{cite news |title=Sinn Féin ends policing boycott |url=http://www.breakingnews.ie/ireland/?jp=CWSNOJEYCWAU |publisher=BreakingNews.ie |date=28 January 2007 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20070216182711/http://breakingnews.ie/ireland/?jp=CWSNOJEYCWAU |archive-date=16 February 2007 |url-status=live}}</ref> Sinn Féin members began to sit on Policing Boards and join District Policing Partnerships.<ref>{{cite web |title=Sinn Féin 'must show visible support for policing' |url=http://www.breakingnews.ie/ireland/?jp=CWSNOJEYCWSN |url-status=live |publisher=BreakingNews.ie |date=28 January 2007 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20070927200933/http://www.breakingnews.ie/ireland/?jp=CWSNOJEYCWSN |archive-date=27 September 2007}}</ref> There was opposition to this decision within Sinn Féin, and some members left, including elected representatives. The most well-known opponent was former IRA prisoner [[Gerry McGeough]], who stood in the [[2007 Northern Ireland Assembly election|2007 Assembly election]] against Sinn Féin in the constituency of [[Fermanagh and South Tyrone (Assembly constituency)|Fermanagh and South Tyrone]], as an Independent Republican.<ref>{{cite web |title=Former IRA prisoner to stand against SF |url=http://www.breakingnews.ie/ireland/?jp=CWSNOJEYSNAU |publisher=BreakingNews.ie |date=29 January 2007 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20070927200711/http://www.breakingnews.ie/ireland/?jp=CWSNOJEYSNAU |archive-date=27 September 2007 |url-status=live}}</ref> He polled 1.8% of the vote.<ref>{{cite web |url=https://www.ark.ac.uk/elections/afst.htm |title=Fermanagh and South Tyrone |website=Ark |access-date=21 December 2020 |archive-date=12 November 2020 |archive-url=https://web.archive.org/web/20201112032859/https://www.ark.ac.uk/elections/afst.htm |url-status=live}}</ref> Others who opposed this development left to found the [[Republican Network for Unity]].<ref>{{cite web |url=https://cain.ulster.ac.uk/othelem/organ/rorgan.htm |title=Republican Network for Unity (RNU) |website=Cain |access-date=16 May 2022 |quote=The Republican Network for Unity (RNU) was formed in 2007. The grouping represents republicans who are opposed to the direction taken by Sinn Féin (SF) in accepting the Good Friday Agreement and in particular the decision taken by SF on 28 January 2007 to support the Police Service of Northern Ireland (PSNI) and to support the criminal justice system in the region. The RNU was formed out of a pressure group known as 'Ex-POW's and Concerned Republicans against RUC/PSNI'. |archive-date=19 April 2022 |archive-url=https://web.archive.org/web/20220419004240/https://cain.ulster.ac.uk/othelem/organ/rorgan.htm |url-status=live}}</ref>

Sinn Féin supported a no vote in the referendum on the [[Twenty-eighth Amendment of the Constitution Bill 2008]].

Immediately after the [[2017 United Kingdom general election|June 2017 UK general election]], where the Conservatives won 49% of seats but not an overall majority, so that non-mainstream parties could have significant influence, Gerry Adams announced for Sinn Féin that their elected MPs would continue the policy of not swearing [[Oath of Allegiance (United Kingdom)|allegiance to the Queen]], as would be required for them to take their seats in the Westminster Parliament.<ref>{{cite web |url=http://irishpost.co.uk/gerry-adams-confirms-sinn-fein-will-not-swear-allegiance-queen-take-westminster-seats/ |title=Gerry Adams confirms Sinn Féin will not swear allegiance to the Queen to take Westminster seats|newspaper=Irish Post |date=9 June 2017 |first=Aidan |last=Lonergan |access-date=9 June 2017 |archive-url=https://web.archive.org/web/20170609143044/http://irishpost.co.uk/gerry-adams-confirms-sinn-fein-will-not-swear-allegiance-queen-take-westminster-seats/ |archive-date=9 June 2017 |url-status=live}}</ref>

In 2017 and 2018, there were allegations of bullying within the party, leading to a number of resignations and expulsions of elected members.<ref>{{cite web |last1=Bardon |first1=Sarah |title=Sinn Féin loses 13 public representatives over bullying claims |url=https://www.irishtimes.com/news/politics/sinn-féin-loses-13-public-representatives-over-bullying-claims-1.3381372 |date=5 February 2018 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=6 February 2018 |archive-date=4 October 2021 |archive-url=https://web.archive.org/web/20211004111405/https://www.irishtimes.com/news/politics/sinn-f%C3%A9in-loses-13-public-representatives-over-bullying-claims-1.3381372 |url-status=live }}</ref>

At the ''Ard Fheis'' on 18 November 2017, Gerry Adams announced he would stand down as president of Sinn Féin in 2018, and would not stand for re-election as TD for [[Louth (Dáil constituency)|Louth]].

===2018–present===
[[File:Mary Lou McDonald and Michelle O’Neill 2018.jpg|thumb|[[Mary Lou McDonald]] and [[Michelle O'Neill]] in February 2018]]
On 10 February 2018, [[Mary Lou McDonald]] was announced as the new president of Sinn Féin at a special Ard Fheis in Dublin.<ref name="Lou">{{cite news |url=https://www.rte.ie/news/politics/2018/0210/939695-sinn-fein-leadership/ |title=McDonald succeeds Adams as President of Sinn Féin |date=10 February 2018 |work=[[RTÉ News]]  |access-date=11 February 2018 |archive-url=https://web.archive.org/web/20180210183926/https://www.rte.ie/news/politics/2018/0210/939695-sinn-fein-leadership/ |archive-date=10 February 2018}}</ref><ref>{{cite web |url=https://www.theguardian.com/politics/2018/feb/10/mary-lou-mcdonald-succeeds-gerry-adams-as-sinn-fein-leader |title=Mary Lou McDonald succeeds Gerry Adams as Sinn Féin leader |date=10 February 2018 |last1=McDonald |first1=Henry |newspaper=[[The Guardian]] |location=London |access-date=11 February 2018 |archive-url=https://web.archive.org/web/20180210234435/https://www.theguardian.com/politics/2018/feb/10/mary-lou-mcdonald-succeeds-gerry-adams-as-sinn-fein-leader |archive-date=10 February 2018}}</ref><ref>{{cite news |url=https://www.irishtimes.com/news/politics/mary-lou-sets-out-her-sf-agenda-opportunities-for-all-not-just-the-few-1.3388121 |title=Mary Lou sets out her SF agenda: 'Opportunities for all, not just the few' |date=10 February 2018 |first=Fiach |last=Kelly |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=11 February 2018 |archive-url=https://web.archive.org/web/20180211022335/https://www.irishtimes.com/news/politics/mary-lou-sets-out-her-sf-agenda-opportunities-for-all-not-just-the-few-1.3388121 |archive-date=11 February 2018}}</ref> [[Michelle O'Neill]] was also elected as vice president of the party.<ref name="Lou"/>

Sinn Féin were opposed to Northern Ireland [[Brexit|leaving the European Union]] together with the rest of the United Kingdom, with [[Martin McGuinness]] suggesting a referendum on the [[United Ireland|reunification of Ireland]] immediately after the [[2016 United Kingdom European Union membership referendum]] results were announced,<ref>{{cite news |url=https://www.independent.co.uk/news/uk/politics/brexit-northern-ireland-eu-referendum-result-latest-live-border-poll-united-martin-mcguinness-a7099276.html |title=Northern Ireland's Deputy First Minister calls for poll on united Ireland after Brexit |first=Siobhan |last=Fenton |date=24 June 2016  |newspaper=[[The Independent]] |location=London |access-date=14 December 2016 |archive-url=https://web.archive.org/web/20161215070034/http://www.independent.co.uk/news/uk/politics/brexit-northern-ireland-eu-referendum-result-latest-live-border-poll-united-martin-mcguinness-a7099276.html |archive-date=15 December 2016 |url-status=live}}</ref> a stance later reiterated by McDonald as a way of resolving the [[Brexit and the Irish border|border issues raised by Brexit]].<ref name=France24>{{cite news |url=http://www.france24.com/en/20180226-northern-ireland-sinn-fein-mary-lou-mcdonald-reunification-referendum-brexit |title=Irish reunification 'on the table', says Sinn Fein's new leader amid Brexit talks |work=[[France 24]] |agency=[[Agence France Presse]] |date=26 February 2018 |access-date=29 March 2018 |first=Romain |last=Houeix |archive-url=https://web.archive.org/web/20180329084419/http://www.france24.com/en/20180226-northern-ireland-sinn-fein-mary-lou-mcdonald-reunification-referendum-brexit |archive-date=29 March 2018 |url-status=live}}</ref>

Sinn Féin's first elections under McDonald resulted in the party performing well under its own expectations during the [[2018 Irish presidential election]] that October,<ref name=RTE2018-10-27a>{{Cite news|url=https://www.rte.ie/news/presidential-election/2018/1027/1007020-martina-fitzgerald-presidential-election/|title=Sinn Féin – the big story of the Presidential Election|first=Martina|last=Fitzgerald|author-link=Martina Fitzgerald (Irish journalist)|date=27 October 2018|work=RTÉ News|access-date=27 October 2018|archive-date=27 October 2018|archive-url=https://web.archive.org/web/20181027142512/https://www.rte.ie/news/presidential-election/2018/1027/1007020-martina-fitzgerald-presidential-election/|url-status=live}}</ref> and similarly, the party's performance was labelled "disastrous" during the concurrent May [[2019 European Parliament election in Ireland]] and [[2019 Irish local elections]]. In the European elections, Sinn Féin lost 2 MEPs and dropped their vote share by 7.8%, while in the local elections the party lost 78 (almost half) of their local councillors and dropped their vote share by 5.7%. McDonald stated "It was a really bad day out for us. But sometimes that happens in politics, and it's a test for you. I mean it's a test for me personally, obviously, as the leader".<ref name="How did they do it?">{{cite news |last=Ní Aodha |first=Gráinne |date=12 February 2020 |title=How did they do it? Sinn Féin's historic 24% win was built on learnt lessons and a fed-up electorate |url=https://www.thejournal.ie/sinn-fein-comeback-5001379-Feb2020/ |access-date=21 February 2020 |archive-date=21 February 2020 |archive-url=https://web.archive.org/web/20200221073019/https://www.thejournal.ie/sinn-fein-comeback-5001379-Feb2020/ |url-status=live }}</ref>

However, in the [[2020 Irish general election]], Sinn Féin received the greatest number of first preference votes nationally, making it the best result for any incarnation of Sinn Féin since [[1922 Irish general election|the 1922 election]].<ref>{{cite news|url=https://www.cnn.com/2020/02/10/europe/ireland-election-sinn-fein-analysis-intl/index.html|title=Sinn Fein surged in Ireland's election. Here's why that's so controversial|first=Nic|last=Robertson|date=10 February 2020|publisher=CNN|accessdate=9 May 2022|archive-date=25 February 2021|archive-url=https://web.archive.org/web/20210225180457/https://www.cnn.com/2020/02/10/europe/ireland-election-sinn-fein-analysis-intl/index.html|url-status=live}}</ref> [[Fianna Fáil]], [[Fine Gael]] and the [[Green Party (Ireland)|Green Party]] formed a coalition government in June 2020.<ref>{{Cite news |date=26 June 2020 |title=FF, FG and Green Party agree historic coalition deal |url=https://www.rte.ie/news/politics/2020/0625/1149711-programme-for-government/ |work=[[RTÉ News]] |language=en-ie |access-date=16 February 2021 |archive-date=26 June 2020 |archive-url=https://web.archive.org/web/20200626213045/https://www.rte.ie/news/politics/2020/0625/1149711-programme-for-government/ |url-status=live}}</ref> Although second on seats won at the election, Sinn Féin became the largest party in the Dáil when [[Marc MacSharry]] resigned from [[Fianna Fáil]] in September 2021, which, with [[Seán Ó Fearghaíl]] sitting as [[Ceann Comhairle]], left Sinn Féin the largest party by one seat.<ref>{{cite news |last1=McConnell |first1=Daniel |title=Sinn Féin must decide whether they ever want to govern |url=https://www.irishexaminer.com/opinion/columnists/arid-40700702.html |date=18 September 2021 |newspaper=[[Irish Examiner]] |issn=1393-9564 |location=Cork |language=en-ie |access-date=27 September 2021 |archive-date=27 September 2021 |archive-url=https://web.archive.org/web/20210927164450/https://www.irishexaminer.com/opinion/columnists/arid-40700702.html |url-status=live }}</ref> Sinn Féin lost their numerical advantage in February 2022 following the resignation of [[Violet-Anne Wynne]].<ref>{{cite news |last=O'Connell |first=Hugh |date=25 February 2022 |title=Sinn Féin TD Violet-Anne Wynne resigns from party over 'psychological warfare' |url=https://www.independent.ie/irish-news/politics/sinn-fein-td-violet-anne-wynne-resigns-from-party-over-psychological-warfare-41383485.html |newspaper=[[Irish Independent]] |location=Dublin |issn=0021-1222 |language=en-ie |access-date=25 February 2022 |archive-date=25 February 2022 |archive-url=https://web.archive.org/web/20220225072222/https://www.independent.ie/irish-news/politics/sinn-fein-td-violet-anne-wynne-resigns-from-party-over-psychological-warfare-41383485.html |url-status=live }}</ref>

In November 2020, the national chairman of Sinn Féin [[Declan Kearney]] contacted several dissident republican political parties such as [[Saoradh]], [[Republican Network for Unity]] and the [[Irish Republican Socialist Party]] about creating a united republican campaign to call for a referendum on Irish unification. This information did not become publicly known until 2022 and the move was criticised in some quarters on the basis that it would be wrong for Sinn Féin to work with dissident republican groups which do not repudiate violence by paramilitaries. Sinn Féin retorted that engaging with dissident republicans draws them into the democratic process and political solutions instead of violent ones.<ref>{{cite news |last=Mooney |first=John |date=1 May 2022 |title=Sinn Fein reached out to political wing of New IRA |url=https://www.thetimes.com/article/sinn-fein-reached-out-to-political-wing-of-new-ira-wrhljns9c |work=[[The Times]] |location= |access-date=13 May 2022 |quote=Sinn Fein said yesterday that Kearney has consistently tried to engage with a range of groups. "We have always stated that dialogue and engagement — even with those who support armed factions — is a vital part of the peace process and moving these groups away from violence in line with the peaceful and democratic route to ending partition provided by the Good Friday agreement," it said. |archive-date=12 May 2022 |archive-url=https://web.archive.org/web/20220512182426/https://www.thetimes.co.uk/article/sinn-fein-reached-out-to-political-wing-of-new-ira-wrhljns9c |url-status=live }}</ref><ref>{{cite news |last=Mooney |first=John |date=6 May 2022 |title=Sinn Féin approached INLA's political wing over border poll |url=https://www.thetimes.com/world/ireland-world/article/sinn-fein-approached-inlas-political-wing-over-border-poll-66w3xwg0k |work=[[The Times]] |location= |access-date=13 May 2022 |archive-date=8 May 2022 |archive-url=https://web.archive.org/web/20220508183905/https://www.thetimes.co.uk/article/sinn-fein-approached-inlas-political-wing-over-border-poll-66w3xwg0k |url-status=live }}</ref>

Sinn Féin won 29% of the [[first-preference votes]] in the [[2022 Northern Ireland Assembly election]], the highest share of any party. With 27 out of 90 seats, they became the largest party in Stormont for the first time ever.<ref>{{cite news|url=https://apnews.com/article/business-europe-ireland-northern-belfast-ab45c4ca47a3258d807b33449bff01c2|title=Sinn Fein hails 'new era' as it wins Northern Ireland vote|last1=Hui|first1=Sylvia|last2=Morrison|first2=Peter|date=7 May 2022|publisher=[[Associated Press]]|access-date=12 May 2022|language=en|archive-date=11 May 2022|archive-url=https://web.archive.org/web/20220511155246/https://apnews.com/article/business-europe-ireland-northern-belfast-ab45c4ca47a3258d807b33449bff01c2|url-status=live}}</ref> "Today ushers in a new era", O'Neill said shortly before the final results were announced. "Irrespective of religious, political or social backgrounds, my commitment is to make politics work."<ref>{{cite news |url=https://www.independent.co.uk/news/uk/naomi-long-mary-lou-mcdonald-stormont-alliance-party-northern-ireland-b2073801.html |title=Michelle O'Neill: Assembly election result ushers in new era |last=McCambridge |first=Jonathan |date=12 May 2022 |work=[[The Independent]] |place=London |accessdate=12 May 2022 |archive-date=12 May 2022 |archive-url=https://web.archive.org/web/20220512175027/https://www.independent.co.uk/news/uk/naomi-long-mary-lou-mcdonald-stormont-alliance-party-northern-ireland-b2073801.html |url-status=live }}</ref>

Following the [[2023 Northern Ireland local elections]], Sinn Féin became the largest party in local government for the first time.<ref>{{Cite news |date=2023-05-20 |title=NI council elections 2023: Sinn Féin largest party in NI local government |language=en-GB |work=BBC News |url=https://www.bbc.com/news/uk-northern-ireland-65655547 |access-date=2023-05-20}}</ref> Then, in the local elections in the Republic of Ireland [[2024 Irish local elections|in 2024]], Sinn Féin increased their vote share, however, significantly fell short of the polls, showcasing a divide between the party's leadership and grassroots over immigration, with disgruntled Sinn Féin voters voting instead for small right-wing parties.<ref>{{cite web | last=Halpin | first=Padraic | title=Irish coalition parties hammer Sinn Fein in local elections | website=Reuters | date=2024-06-09 | url=https://www.reuters.com/world/europe/irish-coalition-parties-set-trounce-sinn-fein-local-elections-2024-06-08/ | access-date=2024-06-12}}</ref><ref>{{cite news |last1=Webber |first1=Jude |title=Sinn Féin falters in Irish local elections |url=https://www.ft.com/content/9d11a7d6-33e9-48bb-ab31-d36a3ae25bb4 |website=[[Financial Times]] |date=9 June 2024 |access-date=16 June 2024}}</ref> However, following the [[2024 United Kingdom general election]], Sinn Féin became the single largest party representing Northern Ireland in Westminster.<ref>{{cite web |last1=Wilson |first1=Davy |last2=Andrews |first2=Chris |title=Sinn Féin becomes NI's largest Westminster party |url=https://www.bbc.com/news/articles/c8978z7z8w4o |website=[[BBC]] |date=5 July 2024 |access-date=6 July 2024}}</ref>

== Past links with Republican paramilitaries ==
Sinn Féin is the largest [[Irish republican]] political party, and was historically associated with the [[Irish Republican Army (1919–1922)|Irish Republican Army]], while also having been associated with the [[Provisional Irish Republican Army]] in the party's modern incarnation. The Irish government alleged that senior members of Sinn Féin have held posts on the [[IRA Army Council]].<ref>{{cite news |url=https://www.scotsman.com/news/uk-news/these-men-run-ira-says-dublin-2479484 |title=These men run IRA, says Dublin |date=21 February 2005 |newspaper=[[The Scotsman]] |location=Edinburgh |access-date=24 January 2022 |archive-date=24 January 2022 |archive-url=https://web.archive.org/web/20220124200631/https://www.scotsman.com/news/uk-news/these-men-run-ira-says-dublin-2479484 |url-status=live }}</ref><ref>{{cite news |url=https://www.independent.co.uk/news/uk/this-britain/mcguinness-and-adams-on-ira-army-council-says-dublin-484292.html |title=Irish government allegations about IRA army council |last=McKittrick |first=David |author-link=David McKittrick |date=21 February 2005 |newspaper=[[The Independent]] |location=London |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20100511080137/http://www.independent.co.uk/news/uk/this-britain/mcguinness-and-adams-on-ira-army-council-says-dublin-484292.html |archive-date=11 May 2010 |url-status=live}}</ref> However, the SF leadership has denied these claims.<ref>{{cite web |title=Gerry Adams and Sinn Fein |url=https://www.pbs.org/wgbh/pages/frontline/shows/ira/conflict/gasf.html |publisher=[[PBS|Public Broadcasting Service]] (PBS) |place=Arlington, Virginia |access-date=30 May 2015 |archive-url=https://web.archive.org/web/20000709104042/http://www.pbs.org/wgbh/pages/frontline/shows/ira/conflict/gasf.html |archive-date=9 July 2000 |date=1998 |url-status=live |quote=The relationship between Sinn Fein and the IRA, historically, has been symbiotic. It is impossible to separate them. In more recent years, Sinn Fein has said, "We are not the IRA, they are a totally separate organization." In the minds of the vast majority of people in Ireland, whether they are Unionist or Nationalist, Sinn Fein is the political wing of the IRA, and it has played that role quite hotly down the years.}}</ref>

A republican document of the early 1980s stated: "Both Sinn Féin and the IRA play different but converging roles in the war of national liberation. The Irish Republican Army wages an armed campaign... Sinn Féin maintains the propaganda war and is the public and political voice of the movement".{{sfn|O'Brien|1995|page=128}} Robert White states at that time Sinn Féin was the junior partner in the relationship with the IRA, and they were separate organisations despite there being some overlapping membership.{{sfn|White|2017|page=201}}

Because of the party's links to the Provisional IRA, the [[United States Department of State|U.S. Department of State]] barred its members along with IRA volunteers from entering the U.S. since the early 1970s in accordance with the [[Immigration and Nationality Act of 1952|Immigration and Nationality Act]] on the grounds that they were associated with the IRA waging war against a legitimate government.<ref>{{cite news|url=https://www.nytimes.com/1975/04/28/archives/suspected-leaders-of-ira-in-belfast-denied-us-visas.html|title=Suspected Leaders Of I.R.A. in Belfast Denied U.S. Visas|date=April 28, 1975|work=[[The New York Times]]}}</ref><ref>{{cite book|title=The Greening of the White House: The Inside Story of how America Tried to Bring Peace to Ireland|first=Conor|last=O'Clery|page=9|date=1996|publisher=[[Gill (publisher)|Gill & Macmillan]]|isbn=9-7807-1712-4916|quote=[Gerry Adams] had been barred along with other Sinn Féin leaders from entering the United States since the early 1970s because of his association with the IRA.}}</ref>

The [[Government of the United Kingdom|British government]] stated in 2005 that "we had always said all the way through we believed that Sinn Féin and the IRA were inextricably linked and that had obvious implications at leadership level".<ref>{{cite web |work=10 Downing Street online |title=Press Briefing: 3.45pm Monday 21 February 2005 |url=http://www.number-10.gov.uk/output/Page7148.asp |access-date=30 May 2015 |archive-url=https://web.archive.org/web/20080526035745/http://www.number-10.gov.uk/output/Page7148.asp |archive-date=26 May 2008 |date=21 February 2005 |url-status=dead}}</ref>

The [[Northern Bank robbery]] of £26.5&nbsp;million in Belfast in December 2004 further delayed a political deal in Northern Ireland. The IRA were widely blamed for the robbery,<ref>{{cite news |first=Owen |last=Bowcott |url=https://www.theguardian.com/uk/2005/jan/07/northernireland.northernireland |title=Bank raid allegations put peace at risk |newspaper=[[The Guardian]] |location=London |date=7 January 2005 |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20130930220042/http://www.theguardian.com/uk/2005/jan/07/northernireland.northernireland |archive-date=30 September 2013 |url-status=live}}</ref> although Sinn Féin denied this and stated that party officials had not known of the robbery nor sanctioned it.<ref>{{cite news |first=Lee |last=Glendinning |url=https://www.theguardian.com/uk/2008/oct/09/northernbankrobbery.background |title=Northern Bank robbery: The crime that nearly ended the peace process |date=9 October 2008 |newspaper=[[The Guardian]] |location=London |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20130930220248/http://www.theguardian.com/uk/2008/oct/09/northernbankrobbery.background |archive-date=30 September 2013 |url-status=live}}</ref> Because of the timing of the robbery, it is considered that the plans for the robbery must have been laid whilst Sinn Féin was engaged in talks about a possible peace settlement. This undermined confidence among [[Unionism (Ireland)|unionists]] about the sincerity of republicans towards reaching agreement. In the aftermath of the row over the robbery, a further controversy erupted when, on [[RTÉ]]'s ''[[Questions and Answers (TV series)|Questions and Answers]]'' programme, the chairman of Sinn Féin, [[Mitchel McLaughlin]], insisted that the IRA's controversial killing of a mother of ten young children, [[Jean McConville]], in the early 1970s though "wrong", was not a crime, as it had taken place in the context of the political conflict. Politicians from the Republic, along with the Irish media, strongly attacked McLaughlin's comments.<ref>{{cite news |title=Resignation call rejected |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4186887.stm |work=[[BBC News]] |date=19 January 2005 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20070824155121/http://news.bbc.co.uk/1/hi/northern_ireland/4186887.stm |archive-date=24 August 2007 |url-status=live}}</ref><ref>{{cite news |url=http://www.emigrant.ie/article.asp?iCategoryID=177&iArticleID=39755 |title=Fallout from bank raid |first=Katie |last=Mingey |date=24 January 2005 |newspaper=[[The Irish Emigrant]] |place=Galway |id=Issue No. 938 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20051202101227/http://www.emigrant.ie/article.asp?iCategoryID=177&iArticleID=39755 |archive-date=2 December 2005}}</ref>

On 10 February 2005, the government-appointed [[Independent Monitoring Commission]] reported that it firmly supported the [[Police Service of Northern Ireland|PSNI]] and [[Garda Síochána]] assessments that the IRA was responsible for the Northern Bank robbery and that certain senior members of Sinn Féin were also senior members of the IRA and would have had knowledge of and given approval to the carrying out of the robbery.<ref>{{cite web |title=Fourth report of the Independent Monitoring Commission |url=http://www.independentmonitoringcommission.org/documents/uploads/HC%20308.pdf |publisher=[[Independent Monitoring Commission]] |date=10 February 2005 |access-date=28 March 2007 |url-status=usurped |archive-url=https://web.archive.org/web/20070614121443/https://www.independentmonitoringcommission.org/documents/uploads/HC%20308.pdf |archive-date=14 June 2007}}</ref> Sinn Féin has argued that the IMC is not independent, and that the inclusion of former [[Alliance Party of Northern Ireland|Alliance Party]] leader [[John Alderdice]] and a British security head was proof of this.<ref>{{cite web |title=IMC should be scrapped |first=Conor |last=Murphy |author-link=Conor Murphy |url=http://www.sinnfein.ie/gaelic/news/detail/13261 |publisher=Sinn Féin |date=27 February 2006 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20070927230827/http://www.sinnfein.ie/gaelic/news/detail/13261 |archive-date=27 September 2007}}</ref> The IMC recommended further financial sanctions against Sinn Féin members of the Northern Ireland Assembly. The British government responded by saying it would ask MPs to vote to withdraw the parliamentary allowances of the four Sinn Féin MPs elected in 2001.<ref>{{cite news |title=Sinn Féin facing raid sanctions |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4285723.stm |work=[[BBC News]] |date=22 February 2005 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20060831015740/http://news.bbc.co.uk/1/hi/northern_ireland/4285723.stm |archive-date=31 August 2006 |url-status=live}}</ref>

Gerry Adams responded to the IMC report by challenging the Irish government to have him arrested for IRA membership—a crime in both jurisdictions—and for [[conspiracy (crime)|conspiracy]].<ref>{{cite web |url=http://www.rte.ie/news/2005/0210/northpolitics.html |title=Adams challenges Ahern to have him arrested |date=10 February 2005 |work=[[RTÉ News]] |location=Dublin |language=en-ie |access-date=27 April 2006 |archive-url=https://web.archive.org/web/20070321151627/http://www.rte.ie/news/2005/0210/northpolitics.html |archive-date=21 March 2007 |url-status=live}}</ref>

On 20 February 2005, the Irish [[Minister for Justice, Home Affairs and Migration|Minister for Justice, Equality and Law Reform]] [[Michael McDowell (politician)|Michael McDowell]] publicly accused three of the Sinn Féin leadership, Gerry Adams, [[Martin McGuinness]] and [[Martin Ferris]] (TD for [[Kerry North (Dáil constituency)|Kerry North]]) of being on the seven-man IRA Army Council; they later denied this.<ref>{{cite news |title=McDowell: These men are leaders of the IRA |first1=Tom |last1=Brady |first2=Senan |last2=Molony |author2-link=Senan Molony |url=http://www.unison.ie/irish_independent/stories.php3?ca=39&si=1344760&issue_id=12116 |date=21 February 2005 |newspaper=[[Irish Independent]] |location=Dublin |issn=0021-1222 |language=en |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20160216093704/http://www.unison.ie/irish_independent/stories.php3?ca=39&si=1344760&issue_id=12116 |archive-date=16 February 2016 |url-status=live}}</ref><ref>{{cite news |title=Dublin: Sinn Féin chiefs in IRA |first=Peter |last=Taggart |url=http://edition.cnn.com/2005/WORLD/europe/02/20/nireland.sinn.fein/ |publisher=[[CNN]] |date=21 February 2005 |access-date=28 March 2007 |archive-url=https://web.archive.org/web/20050311134201/http://edition.cnn.com/2005/WORLD/europe/02/20/nireland.sinn.fein/ |archive-date=11 March 2005 |url-status=live}}</ref>

On 27 February 2005, a demonstration against the murder of [[Robert McCartney (murder victim)|Robert McCartney]] on 30 January 2005 was held in east Belfast. [[Alex Maskey]], a former Sinn Féin [[Lord Mayor of Belfast]], was told by relatives of McCartney to "hand over the 12" IRA members involved.<ref>{{cite news |title=Give up killers, people's protest tells IRA |url=http://www.timesonline.co.uk/tol/news/uk/article416360.ece |first=David |last=Sharrock |date=28 February 2005 |newspaper=[[The Times]] |location=London |access-date=28 March 2007 |archive-url=http://wayback.vefsafn.is/wayback/20100417153557/http://www.timesonline.co.uk/tol/news/uk/article416360.ece |archive-date=17 April 2010 |url-status=dead}}</ref> The McCartney family, although formerly Sinn Féin voters themselves, urged witnesses to the crime to contact the PSNI.<ref>{{cite news |title=How pub brawl turned into republican crisis |first=Angelique |last=Chrisafis |url=https://www.theguardian.com/Northern_Ireland/Story/0,,1426976,00.html |date=28 February 2005 |newspaper=[[The Guardian]] |location=London |access-date=29 March 2007 |archive-date=4 October 2021 |archive-url=https://web.archive.org/web/20211004111417/https://www.theguardian.com/uk/2005/feb/28/northernireland.northernireland |url-status=live }}</ref><ref>{{cite news |title=IRA expels three over McCartney murder |first=Angelique |last=Chrisafis |url=https://www.theguardian.com/Northern_Ireland/Story/0,,1425969,00.html |date=26 February 2005 |newspaper=[[The Guardian]] |location=London |access-date=29 March 2007 |archive-date=4 October 2021 |archive-url=https://web.archive.org/web/20211004111407/https://www.theguardian.com/uk/2005/feb/26/northernireland.northernireland |url-status=live }}</ref> Three IRA men were expelled from the organisation, and a man was charged with McCartney's murder.<ref>{{cite news |title=IRA expels three after killing |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4299599.stm |date=26 February 2005 |work=[[BBC News]] |access-date=29 March 2007 |archive-url=https://web.archive.org/web/20051122131629/http://news.bbc.co.uk/1/hi/northern_ireland/4299599.stm |archive-date=22 November 2005 |url-status=live}}</ref><ref>{{cite news |title=Two remanded in McCartney killing |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/4609435.stm |date=4 June 2005 |work=[[BBC News]] |access-date=29 March 2007 |archive-url=https://web.archive.org/web/20090115140709/http://news.bbc.co.uk/1/hi/northern_ireland/4609435.stm |archive-date=15 January 2009 |url-status=live}}</ref>

Irish [[Taoiseach]] [[Bertie Ahern]] subsequently called Sinn Féin and the IRA "both sides of the same coin".<ref>{{cite news |url=http://www.belfasttelegraph.co.uk/news/local-national/article2138000.ece  |title=Sinn Féin must prove it supports the rule of law |date=9 January 2007 |newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=28 March 2007|archive-url=https://archive.today/20070128153322/http://www.belfasttelegraph.co.uk/news/local-national/article2138000.ece |archive-date=28 January 2007 |url-status=dead}}</ref> In February 2005 [[Dáil Éireann]] passed a motion condemning the party's alleged involvement in illegal activity. The [[Presidency of George W. Bush|Bush Administration]] did not invite Sinn Féin or any other Northern Irish political party to the annual [[St Patrick's Day]] celebrations at the [[White House]], choosing instead to invite the family of Robert McCartney.{{sfn|Frampton|2009|page=164}} Senator [[Ted Kennedy]], a regular sponsor of Gerry Adams' visits to the US during the peace process, also refused to meet Adams and hosted the McCartney family instead.{{sfn|Frampton|2009|page=164}}

On 10 March 2005, the [[House of Commons of the United Kingdom|House of Commons]] in London passed without significant opposition a motion, introduced by the British government, to withdraw the allowances of the four Sinn Féin MPs for one year, in response to the Northern Bank Robbery. This measure cost the party approximately £400,000. However, the debate prior to the vote mainly surrounded the more recent events connected with the murder of Robert McCartney. Conservatives and unionists put down amendments to have the Sinn Féin MPs evicted from their offices at the House of Commons but these were defeated.<ref>{{cite web |title=SF stripped of Commons allowances |url=http://archives.tcm.ie/breakingnews/2005/03/10/story193115.asp |publisher=BreakingNews.ie |date=10 March 2005 |access-date=30 May 2015 |url-status=dead |archive-url=https://web.archive.org/web/20120929085237/http://www.breakingnews.ie/archives/2005/0310/ireland/kfsnmhkfkfoj/ |archive-date=29 September 2012}}</ref>

In March 2005, [[Mitchell Reiss]], the [[United States Special Envoy for Northern Ireland]], condemned the party's links to the IRA, saying "it is hard to understand how a European country in the year 2005 can have a private army associated with a political party".<ref>{{cite web |url=https://www.nbcnews.com/id/wbna7169846 |title=Sinn Féin chief says IRA may cease to exist |date=12 March 2005 |access-date=27 April 2006 |publisher=[[NBC News]] |archive-url=https://web.archive.org/web/20131113055816/http://www.nbcnews.com/id/7169846/ |archive-date=13 November 2013 |url-status=live}}</ref>

The October 2015 [[Assessment on Paramilitary Groups in Northern Ireland]] concluded that the Provisional IRA still existed "in a much reduced form", and that some IRA members believed its Army Council oversaw both the IRA and Sinn Féin, although it believed that the leadership "remains committed to the peace process and its aim of achieving a united Ireland by political means".<ref>{{cite web |url=https://www.gov.uk/government/publications/assessment-on-paramilitary-groups-in-northern-ireland |title=Assessment on paramilitary groups in Northern Ireland |date=20 October 2015 |publisher=[[Northern Ireland Office]] |access-date=28 October 2015 |archive-url=https://web.archive.org/web/20160128185055/https://www.gov.uk/government/publications/assessment-on-paramilitary-groups-in-northern-ireland |archive-date=28 January 2016 |url-status=live}}</ref>

==Organisation and structure==
{{multiple image
| align             = right
| direction         = horizontal
| width             = 
| total_width       = 333
| perrow            = 4
| header            = Members of Sinn Féin's National Officer Board
| image1            = Pearse Doherty 2015.jpg
| image2            = SF Conor Murphy 2022 (cropped).jpg
| image3            = Declan Kearney 2015 (cropped).jpg
| image4            = Ciarán Quinn, 2016 (cropped).jpg
| image5            = No-Image-Placeholder.svg
| image6            = Michelle O'Neill (cropped from Martin McGuinness, Michelle O'Neill, Mary Lou McDonald and Gerry Adams).jpg
| image7            = Mary Lou McDonald 2024 (cropped).jpg
| caption1          = Treasurer: [[Pearse Doherty]]
| caption2          = Treasurer: [[Conor Murphy]]
| caption3          = Chairperson: [[Declan Kearney]]
| caption4          = Director of Publicity: Ciarán Quinn
| caption5          = General Secretary: Sam Baker<ref name="IN 13 Jan 2025">{{cite news |last=Manley |first=John |date=13 January 2025 |title=Sinn Féin governance and safeguarding review at ‘very considerably advanced’ stage |url=https://www.irishnews.com/news/politics/sinn-fein-governance-and-safeguarding-review-at-very-considerably-advanced-stage-CRXOGBTTPNFSXCC3LQLZOY5KKU/?utm_source=chatgpt.com |work=[[Irish News]] |location= |publisher= |access-date=11 June 2025}}</ref>
| caption6          = Vice-President: [[Michelle O'Neill]]
| caption7          = President: [[Mary Lou McDonald]]
| caption_align     = center
| footer            = 
| footer_align      = centre
| alt1              = 
}}
Sinn Féin operates under the principle of [[democratic centralism]];<ref name="McCabe Village DC">{{cite news |last=McCabe |first=Anton |date=1 March 2022 |title=Sinn Féin is Democratically Centralised |url=https://villagemagazine.ie/wp-content/uploads/2022/07/Ed-SF-Democr.pdf |work=[[Village (magazine)|Village]] |location= |access-date=13 February 2023}}</ref><ref>{{cite news |last=Clifford |first=Mark |date=25 April 2021 |title=Mick Clifford: Sinn Féin deserves the extra scrutiny it gets from the media |url=https://www.irishexaminer.com/opinion/columnists/arid-40273325.html |work=[[Irish Examiner]] |location= |access-date=13 February 2023}}</ref><ref>{{cite news |last=McGee |first=Harry |date=10 December 2020 |title=Sinn Féin struggles to keep everyone on same message |url=https://connachttribune.ie/sinn-fein-struggles-to-keep-everyone-on-same-message/ |work=Connacht Tribune |location= |archive-url=https://web.archive.org/web/20201210070808/https://connachttribune.ie/sinn-fein-struggles-to-keep-everyone-on-same-message/ |archive-date=10 December 2020 |access-date=28 July 2023}}</ref><ref name="McDowell Jan 2022">{{cite news |author-link=Michael McDowell (politician) |first=Michael |last=McDowell |date=19 January 2022 |title=Does it matter how Sinn Féin organises itself? |url=https://www.irishtimes.com/opinion/michael-mcdowell-does-it-matter-how-sinn-fein-organises-itself-1.4779692 |newspaper=[[The Irish Times]] |access-date=13 February 2023 |url-access=subscription}}</ref><ref>{{cite news |date=4 December 2020 |title=Sinn Féin member resigns after being confronted over critical tweets |url=https://www.breakingnews.ie/ireland/sinn-fein-member-resigns-after-being-confronted-over-critical-tweets-1046665.html |work= |location= |access-date=28 July 2023 |quote=She received messages from other members of Ógra Sinn Féin stating that a cornerstone of the functioning of the party was to have discussions that were kept internal and that adhered to the principles of "democratic centralism".}}</ref><ref>{{cite web |url=https://jacobin.com/2020/07/ireland-sinn-fein-ira-one-mans-terrorist |title=Ireland's National Conflict Is About Imperialism as Well as Sectarianism |last=Finn |first=Daniel |date=7 December 2020 |work=[[Jacobin (magazine)|Jacobin]] |publisher= |access-date=28 July 2023 |quote=or better or worse, Sinn Féin is by far the largest party in Western Europe that still practices a kind of democratic centralism.}}</ref> the concept that policy should be debated internally within the party, and once a decision is made, all members must support the chosen policy publicly or be disciplined. Once a decision has been made, it cannot be revisited or altered for a prolonged period of time.

Decision-making within Sinn Féin is controlled by two bodies; the national officer board and the Árd Comhairle (national executive).<ref name="Intro to SF">{{cite web |url=http://www.sinnfein.org/documents/introsf.html |title=Introduction to Sinn Fein |publisher=Sinn Féin |access-date=13 February 2023 |quote=}}</ref><ref name="Bray 5 years In">{{cite news |last=Bray |first=Jennifer |date=11 February 2023 |title=Mary Lou McDonald faces her biggest challenge yet, five years after rising to the top of Sinn Féin |url=https://www.irishtimes.com/politics/2023/02/11/mary-lou-mcdonald-faces-her-biggest-challenge-yet-five-years-after-rising-to-the-top-of-sinn-fein/ |newspaper=[[The Irish Times]] |location= |access-date=13 February 2023}}</ref> The national officer board consists of 7 members, made up of the President of Sinn Féin, the Vice President, the chairperson, the General Secretary, the Director of Publicity and two treasurers.<ref name="Intro to SF"/> Policy will be debated amongst the national officer board before next being brought before the Árd Comhairle.<ref name="Bray 5 years In"/>

Sinn Féin's Árd Comhairle consists of 47 members. Members of the national officer board are automatically members, while the rest of the membership is made up of officers elected at Sinn Féin's annual national conference ([[Ard Fheis]]). Members of the Árd Comhairle must already be members of the Comhairlí Limistéir (Area councils), which are based county or constituency boundaries.<ref name="Intro to SF"/> {{As of|2023}}, despite the fact that the bulk majority of Sinn Féin's membership and elected representatives come from the Republic of Ireland, the majority of the Árd Comhairle is from Northern Ireland.<ref name="Bray 5 years In"/> For every 2 TDs on the Árd Comhairle, there are 3 MLAs.<ref name="Bray 5 years In"/><ref name="McDowell Jan 2022"/> Some members of the Árd Comhairle hold no public office and are former members of the Provisional IRA.<ref name="McCabe Village DC"/><ref name="Bray 5 years In"/>

When a decision is made by the Árd Comhairle, all members of Sinn Féin must abide by it without dissent, including the President. In 2020, all of Sinn Féin's candidates in the 2020 Irish general election were required to sign a pledge stating "in all matters pertaining to the duties and functions of an elected representative, I will be guided by and hold myself amenable to all directions and instructions issued to me by An Ard Chomhairle of Sinn Féin".<ref name="candidates sign pledge">{{cite news |last=Leahy |first=Pat |date=27 January 2020 |title=McDonald and SF candidates sign pledge to be guided by ardchomhairle |url=https://www.irishtimes.com/news/politics/mcdonald-and-sf-candidates-sign-pledge-to-be-guided-by-ardchomhairle-1.4153185 |newspaper=[[The Irish Times]] |location= |access-date=13 February 2023}}</ref>

Within the Árd Comhairle, there is a further subdivision, called the Coiste Seasta (Standing Committee), made up of 8 members, who act as a [[Central Committee]].<ref name="Intro to SF"/><ref name="Bray 5 years In"/> Unlike other Teachtaí Dála from other parties, Sinn Féin TDs are not allowed to hire their own staff and instead the Coiste Seasta chooses staff for them. Some Sinn Féin TDs have complained of these staff members handing them scripts to read publicly which they had no input into writing.<ref name="Toibin Zero Influence">{{cite news |last=Ryan |first=Philip |date=28 January 2020 |title=Sinn Féin TDs have 'zero' influence and policies are handed down, says Tóibín |url=https://www.independent.ie/irish-news/election-2020/sinn-fein-tds-have-zero-influence-and-policies-are-handed-down-says-toibin-38901964.html |work=[[The Irish Independent]] |location= |access-date=13 February 2023}}</ref><ref>{{cite news |last=O'Connell |first=Hugh |date=3 March 2022 |title=Former Sinn Féin TDs say party did not let them choose staff |url=https://www.independent.ie/irish-news/politics/former-sinn-fein-tds-say-party-did-not-let-them-choose-staff-41405050.html |work=[[The Irish Independent]] |location= |access-date=13 February 2023}}</ref>

Some critics inside Sinn Féin have opined that decision-making in the party rests with the officer board and that the Árd Comhairle serves merely to [[Rubber stamp (politics)|rubberstamp]] decisions that have already been made.<ref name="Bray 5 years In"/> External critics have called Sinn Féin's organisation and structure "opaque", "hierarchical", "confusing" and "undemocratic".<ref name="In the News podcast Feb 2023">{{cite podcast |url=https://open.spotify.com/episode/4W9kJmaLd3PKoWsP62FiTm |title=Has Sinn Féin changed under Mary Lou McDonald's leadership |website= |publisher=[[The Irish Times]] |host= |date=13 February 2023 |time= |access-date=13 February 2023}}</ref><ref name="Toibin Zero Influence"/> Former Sinn Féin TD [[Peadar Tóibín]] claimed in 2020 that Sinn Féin TDs have "zero influence" over party policy, and that all decisions ultimately rested with the national officer board.<ref name="Toibin Zero Influence"/> It was also in 2020 that both Fine Gael and Fianna Fáil criticised Sinn Féin's organisation, with [[Patrick O'Donovan]] of Fine Gael stating "the fact that Sinn Féin reps sign a pledge which says they will be guided by their Ard Chomhairle, a council of people not elected by the public, rather than those who elect them, is an outright affront to democracy".<ref>{{cite web |url=https://www.finegael.ie/sinn-feins-pledge-to-follow-unelected-ruling-council-an-affront-to-democracy-odonovan/ |title=Sinn Féin's pledge to follow unelected ruling council an affront to democracy – O'Donovan - Fine Gael |author=[[Patrick O'Donovan]] |date=28 January 2020 |website= |publisher=[[Fine Gael]] |access-date=13 February 2023 |quote=}}</ref> In 2022 the left-wing political magazine ''[[Village (magazine)|Village]]'' opined that while all major political parties in Ireland are influenced by unelected individuals, Sinn Féin is disproportionally controlled by a "backroom regime", and alleged that the Coiste Seasta, made up of unelected Northerners and former IRA members, holds the power to influence the decisions of TDs.<ref name="McCabe Village DC"/>

Sinn Féin denies the allegations that its structure is undemocratic and has compared its organisation to other Irish political parties such as Fianna Fáil.<ref name="candidates sign pledge"/> Sinn Féin maintains it is a bottom-up, not a top-down organisation and that, ultimately, decision-making comes from its annual Ard Fhéis and the votes of ordinary members.<ref name="Intro to SF"/><ref name="candidates sign pledge"/> In 2020 Mary Lou McDonald dismissed suggestions that Sinn Féin, including herself, were controlled by "shadowy figures" as an idea rooted in sexism. In 2020 she stated "I have a strong sense that there is at least an undertone of sexism and misogyny in suggesting that our strings are pulled. I'm very stubborn. I'm very willful. I know my own mind and God help anybody who tries to pull my strings or tell me what to do".<ref>{{cite news |last=Finn |first=Christina |date=6 February 2020 |title=The Candidate Podcast: Mary Lou says undertone of 'sexism' at play with talk of 'shadowy figures' pulling her strings |url=https://www.thejournal.ie/the-candidate-mary-lou-mcdonald-4995167-Feb2020/ |work=[[TheJournal.ie]] |location= |access-date=13 February 2023}}</ref> while in 2021 she stated that people needed to get over the "sexist" idea that "this woman couldn't possibly be really the leader of Sinn Féin. Well guess what? I really am, boys".<ref name="Bray 5 years In"/>

==Ideology and policies==
{{Irish republicanism|Active parties}}
Sinn Féin is an [[Irish republicanism|Irish republican]], [[Democratic socialism|democratic socialist]] and [[Left-wing politics|left-wing]] party.{{sfn|Rafter|2005|page=219}} In the [[European Parliament]], the party aligns itself with [[The Left in the European Parliament – GUE/NGL|The Left in the European Parliament - GUE/NGL]] parliamentary group. Categorised as "populist socialist" in literature,<ref>{{cite journal |first1=Giorgos |last1=Charalambous |first2=Iasonas |last2=Lamprianou |title=Societal Responses to the Post-2008 Economic Crisis among South European and Irish Radical Left Parties: Continuity or Change and Why? |publisher=[[Cambridge University Press]] |journal=[[Government and Opposition]] |year=2016 |doi=10.1017/gov.2014.35<!-- |pages=61-293--> |page=269 |volume=51 |issue=2|doi-access=free }} "It has been rightly categorized by the relevant literature as populist socialist".</ref><ref name="Suiter 2018">{{cite journal |author1= [[Jane Suiter]] |last2=Culloty |first2=Eileen |last3=Greene|first3=Derek |last4=Siapera |first4=Eugenia |date=23 May 2018 |title=Hybrid media and populist currents in Ireland's 2016 General Election |url=https://www.tandfonline.com/doi/full/10.1080/07907184.2021.1976975 |journal=European Journal of Communication |volume=1 |issue=17 |pages= 396–412|doi=10.1177/0267323118775297 |s2cid=149791068 |access-date=19 July 2022|url-access=subscription }}</ref> in 2014 leading party strategist and ideologue [[Eoin Ó Broin]] described Sinn Féin's entire political project as unashamedly populist.{{sfn|Suiter|2016|page=131}} The party has been classed as [[left-wing nationalist]] and [[left-wing populist]] in academia, noting that while Sinn Féin engages in the "us vs them" dynamic of populism, it does so by engaging in the language of "the people vs elites" without resorting to using anti-immigrant rhetoric.<ref name="Suiter 2018"/><ref name="O'Malley Populism non-reaction">{{cite book |last1=O’Malley |first1=Eoin |last2=FitzGibbon |first2=John |date= 15 September 2014|title=European Populism in the Shadow of the Great Recession |chapter=Everywhere and nowhere: Populism and the puzzling non-reaction to Ireland’s crises |ssrn=2496354 |url=https://papers.ssrn.com/sol3/papers.cfm?abstract_id=2496354 |access-date=19 July 2022}}</ref><ref name="Populist Wave">{{cite journal |last1=Quinlan |first1=Stephen |last2=Tinney |first2=Deirdre |date=25 June 2019 |title=A Populist Wave or Metamorphosis of a Chameleon? Populist Attitudes and the Vote in 2016 in the United States and Ireland |url=https://www.esr.ie/article/view/1183 |journal=The Economic and Social Review |volume=50 |issue=2 |pages=281–323 |doi= |access-date=19 July 2022}}</ref>

=== Social and cultural ===
Sinn Féin's main political goal is a [[united Ireland]]. Other key policies from their most recent election manifesto are listed below:
{{columns-list|colwidth=35em|
* The 18 [[List of MPs for constituencies in Northern Ireland (2024-present)|Northern Ireland MPs]] who sit or have sat in the [[Parliament of the United Kingdom]] to be allowed to sit in Dáil Éireann as full Deputies as well<ref>{{cite news |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/1885812.stm |title=Sinn Féin lobbies for Northern Ireland MPs to sit in Dáil Éireann |work=[[BBC News]] |date=21 March 2002 |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20030225234757/http://news.bbc.co.uk/1/hi/northern_ireland/1885812.stm |archive-date=25 February 2003 |url-status=live}}</ref>
* Ending academic selection within the education system<ref>{{cite web |url=http://www.belfasttelegraph.co.uk/news/education/secret-sinn-fein-document-in-full-13876004.html |title=Secret Sinn Fein document in full |date=16 April 2008 |newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=20 April 2010 |archive-url=https://archive.today/20120723083826/http://www.belfasttelegraph.co.uk/news/education/secret-sinn-fein-document-in-full-13876004.html |url-status=dead |archive-date=23 July 2012}}</ref>
* Diplomatic pressure to close [[Sellafield]] nuclear reprocessing plant (in Britain)
* A draft Irish Language Bill for Northern Ireland (''[[Acht na Gaeilge]]''),<ref>{{cite web |url=http://www.sinnfein.ie/gaelic/policies/document/166 |title=Ag cur Gaeilge ar ais i mbhéal an phobail |trans-title=Putting Irish back into the public's mouth |date=2004 |work=Sinn Féin |language=Irish |archive-url=https://web.archive.org/web/20040520071021/http://www.sinnfein.ie/gaelic/policies/document/166 |archive-date=20 May 2004 |url-status=dead |access-date=30 May 2015}} (see {{cite web |url=https://translate.google.co.uk/translate?sl=ga&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fweb.archive.org%2Fweb%2F20040520071021%2Fhttp%3A%2F%2Fwww.sinnfein.ie%2Fgaelic%2Fpolicies%2Fdocument%2F166&edit-text=&act=url |title=machine translated version |archive-url=https://web.archive.org/web/20150530210910/https://translate.google.co.uk/translate?sl=ga&tl=en&js=y&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Fweb.archive.org%2Fweb%2F20040520071021%2Fhttp%3A%2F%2Fwww.sinnfein.ie%2Fgaelic%2Fpolicies%2Fdocument%2F166&edit-text=&act=url |archive-date=30 May 2015}})</ref> a Bill that would give the [[Irish language]] the same status that the [[Welsh language]] has in Wales
* The "[[Plastic bag tax|plastic bag levy]]" to be extended to Northern Ireland
* To further Irish-language teaching in Northern Ireland
* [[Same-sex marriage]] to be extended to Northern Ireland<ref>{{cite web |last1=Cumann |first1=Martin Hurson |title=174 |url=http://www.sinnfein.ie/contents/26286 |work=Sinn Féin |access-date=30 May 2015 |archive-url=https://web.archive.org/web/20131215055347/http://www.sinnfein.ie/contents/26286 |archive-date=15 December 2013 |url-status=live |quote=This Ard Fheis reaffirms its support of equality in all of its forms and reaffirms its support for the LGBT community and commends the work of local councillors and party members throughout both the 26- and Six-County states for pushing for the extension of full marriage rights to the LGBT Community and An Phoblacht for its continued coverage of these important issues.}}</ref> (It was subsequently legalised via an Act of the UK Parliament in 2019.)<ref>{{cite news |last1=Coulter |first1=Peter |title=Same-sex marriage now legal in Northern Ireland |url=https://www.bbc.com/news/uk-northern-ireland-51086276 |access-date=9 February 2020 |work=[[BBC News]] |date=13 January 2020 |archive-date=9 February 2020 |archive-url=https://web.archive.org/web/20200209163210/https://www.bbc.com/news/uk-northern-ireland-51086276 |url-status=live }}</ref>
* Passing a ban on [[conversion therapy]].<ref>{{Cite web |title=Sinn Féin committed to seeing true LGBTQI+ equality achieved – Mary Lou McDonald TD |url=https://vote.sinnfein.ie/sinn-fein-committed-to-seeing-true-lgbtqi-equality-achieved-mary-lou-mcdonald-td/ |access-date=2022-03-06 |website=sinnfein.ie |date=28 June 2020 |archive-date=6 March 2022 |archive-url=https://web.archive.org/web/20220306023548/https://www.sinnfein.ie/contents/57257 |url-status=live }}</ref>
* A pay cap for Sinn Féin TDs tied to the "average industrial wage".<ref>{{cite web |website=businessplus.ie |access-date=18 October 2024 |url=https://businessplus.ie/news/sinn-fein-wage/ |title=Sinn Féin ends fiction of 'average wage' pay cap for their Dáil deputies |date=15 January 2024 }}</ref><ref>{{cite web |url=https://www.independent.ie/irish-news/sf-made-exceptions-on-average-industrial-wage-policy-to-allow-some-tds-to-draw-full-salary-claims-toibin/38905914.html |title=SF made 'exceptions' on average industrial wage policy to allow some TDS to draw full salary, claims Tóibín |date=29 January 2020 |access-date=18 October 2024 |first=Philip |last=Ryan |work=Independent.ie }}</ref>
}}
Sinn Féin believes in immigration, both to fill up vacancies in employment, if the system can properly integrate new immigrants and has the resources to do so, and also to "protect people fleeing persecution and war", but not in "[[open border]]s". The party also believes in faster application processing times for refugees, and in abolishing the [[direct provision]] system.<ref name="SF-GE2020-Manifesto">{{cite web |date=2020 |title=Giving Workers and Families a Break |url=https://www.sinnfein.ie/files/2020/SF_GE2020_Manifesto.pdf |publisher=Sinn Féin |page=70 |access-date=18 September 2020 |archive-date=5 September 2020 |archive-url=https://web.archive.org/web/20200905090954/https://www.sinnfein.ie/files/2020/SF_GE2020_Manifesto.pdf |url-status=live}}</ref>

=== Economy ===
At the [[2020 Irish general election|2020 election]] in the Republic of Ireland,<ref name="SF-GE2020-Manifesto" /> Sinn Féin committed to:
{{columns-list|colwidth=35em|
* 100,000 social and affordable homes over 5 years, along with a ban on rent increases for three years and a tax credit worth up to one month's rent
* Tapering out tax credits for workers earning over €120,000
* Investing €75 million into creating a Worker Co-operative development fund
* Abolishing [[Universal Social Charge]] (USC) for workers earning less than €30,000
* Establishing a state owned childcare service
* Establishment of a government fund to aid small and medium enterprises
* An "all-Ireland" economy with a common currency and one tax
* Abolishing Property Tax
}}
As of January 2022, Sinn Féin in Northern Ireland have committed to:

{{columns-list|colwidth=35em|
* 100,000 social and affordable homes over 15 years, plus passing a new Private Tenancies Bill. 
* Abolishing VAT on fuel and energy-related goods
* Freezing domestic and commercial rates (outlined by Finance Minister [[Conor Murphy]] in the Northern Irish government's 2022/25 budget)
* Capping costs of school uniforms and providing Free School Meal payments outside of term time
* £55 million to assist households with rises in energy bills
* Standardising the minimum wage across all age groups, and introducing a living wage
* Banning zero-hour contracts
* Introducing a "[[right to disconnect]]" from work 
* One month's free childcare for unemployed/low income parents through the Advisory Discretionary Fund
}}

=== Health ===
At the 2020 election in the Republic of Ireland,<ref>{{cite web |url=https://www.sinnfein.ie/files/2020/SF_GE2020_Manifesto.pdf |title=Giving Workers and Families a Break |date=2020 |work=Sinn Féin |language=en |access-date=18 September 2020 |archive-date=5 September 2020 |archive-url=https://web.archive.org/web/20200905090954/https://www.sinnfein.ie/files/2020/SF_GE2020_Manifesto.pdf |url-status=live }}</ref> Sinn Féin committed to:
{{columns-list|colwidth=35em|
* An "All-Ireland-Health-Service" akin to the [[National Health Service]] of the United Kingdom
* Cap on consultants' pay
* Abolishment of prescription charges for medical card patients
* Expansion of primary care centres
* Gradual removal of subsidies of private practice in public hospitals and the introduction of a charge for practitioners for the use of public equipment and staff in their private practice
* Free breast screening (to check for breast cancer) of all women over forty<ref>{{cite news |url=http://www.irishtimes.com/newspaper/ireland/2011/0215/1224289832643.html |title=SF plans free GP and hospital care |date=15 February 2011 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=14 July 2011 |first=Eithne |last=Donnellan |archive-url=https://web.archive.org/web/20111101201408/http://www.irishtimes.com/newspaper/ireland/2011/0215/1224289832643.html |archive-date=1 November 2011 |url-status=live}}</ref>
}}

==== Abortion ====
[[File:Members of Sinn Féin campaign to repeal abortion ban 2018.jpg|thumb|upright=1.1|Members of Sinn Féin calling for a Yes vote in the [[Thirty-sixth Amendment of the Constitution of Ireland|2018 referendum on abortion in Ireland]]]]
Until at least 2007, the party was not in favour of the extension of legalised abortion (British 1967 Act) to Northern Ireland; Assembly member [[John O'Dowd]] said that they were "opposed to the attitudes and forces in society, which pressurise women to have abortions, and criminalise those who make this decision", adding that "in cases of rape, incest or sexual abuse, or where a woman's life and health is at risk or in grave danger, we accept that the final decision must rest with the woman."<ref>{{cite web |title=Sinn Féin on the Assembly debate on Abortion |publisher=Sinn Féin |date=22 October 2007 |url=http://www.sinnfein.ie/news/detail/21360 |access-date=14 November 2007 |archive-url=https://web.archive.org/web/20071025033401/http://www.sinnfein.ie/news/detail/21360 |archive-date=25 October 2007}}</ref> It voted for the [[Protection of Life During Pregnancy Act 2013]], which allowed for termination in cases where a pregnancy endangered a woman's life.<ref>{{cite news |last1=O'Connell |first1=Hugh |title=What exactly is Sinn Féin's policy on abortion? |url=https://www.thejournal.ie/sinn-fein-abortion-policy-1971952-Mar2015/ |work=The Journal |date=4 May 2018 |access-date=17 August 2021 |archive-date=17 August 2021 |archive-url=https://web.archive.org/web/20210817172322/https://www.thejournal.ie/sinn-fein-abortion-policy-1971952-Mar2015/ |url-status=live }}</ref> It voted to support termination, in those limited circumstances, at the 2015 {{lang|ga|Ard Fheis}}, but stopped short of supporting abortion on demand.<ref>{{cite news |last1=McDonald |first1=Henry |title=Sinn Féin drops opposition to abortion at Derry congress |url=https://www.theguardian.com/politics/2015/mar/07/sinn-fein-drops-opposition-to-abortion-at-derry-congress |access-date=30 May 2015 |work=[[The Guardian]] |date=7 March 2015 |archive-url=https://web.archive.org/web/20150401004237/http://www.theguardian.com/politics/2015/mar/07/sinn-fein-drops-opposition-to-abortion-at-derry-congress |archive-date=1 April 2015 |url-status=live |quote=The party voted this weekend to support terminations in limited cases, such as pregnant women with fatal foetal abnormalities.}}</ref> In the [[Thirty-sixth Amendment of the Constitution of Ireland|2018 Irish abortion referendum]], the party campaigned for a "Yes" vote, while remaining opposed to abortion without restriction up to 12 weeks.<ref>{{cite news |last1=Kelly |first1=Fiach |title=Sinn Féin unlikely to change position on abortion before referendum |url=https://www.irishtimes.com/news/ireland/irish-news/sinn-f%C3%A9in-unlikely-to-change-position-on-abortion-before-referendum-1.3419544 |date=8 March 2018 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=17 August 2021 |archive-date=9 November 2020 |archive-url=https://web.archive.org/web/20201109024042/https://www.irishtimes.com/news/ireland/irish-news/sinn-f%C3%A9in-unlikely-to-change-position-on-abortion-before-referendum-1.3419544 |url-status=live }}</ref> At its {{lang|ga|Ard Fheis}} in June 2018, the month after the "yes" vote in the abortion referendum, the party committed itself to supporting abortion, including without restriction up to 12 weeks.<ref>{{cite news |last1=McCormack |first1=Jayne |title=Sinn Féin votes to change abortion policy |url=https://www.bbc.com/news/uk-northern-ireland-44507054 |work=BBC |date=16 June 2018 |access-date=17 August 2021 |archive-date=17 August 2021 |archive-url=https://web.archive.org/web/20210817172322/https://www.bbc.com/news/uk-northern-ireland-44507054 |url-status=live }}</ref> This allowed it not only to support abortion legislation in the Republic, but also to campaign for provision of abortion in Northern Ireland.<ref>{{cite news |title=Sinn Féin votes to liberalise abortion law in Northern Ireland |url=https://www.theguardian.com/uk-news/2018/jun/16/sinn-fein-votes-to-liberalise-abortion-law-in-northern-ireland |work=The Guardian |agency=Press Association |date=16 June 2018 |access-date=17 August 2021 |archive-date=17 August 2021 |archive-url=https://web.archive.org/web/20210817172322/https://www.theguardian.com/uk-news/2018/jun/16/sinn-fein-votes-to-liberalise-abortion-law-in-northern-ireland |url-status=live }}</ref> Sinn Féin TD [[Peadar Tóibín]], who was suspended from the party for voting against abortion legislation, left to form a new party: [[Aontú]].<ref>{{cite news |url=https://www.irishexaminer.com/breakingnews/ireland/peadar-toibin-announces-resignation-from-sinn-fein-885583.html |title=Peadar Tóibín announces resignation from Sinn Féin |date=15 November 2018 |newspaper=[[Irish Examiner]] |issn=1393-9564 |location=Cork |language=en-ie |access-date=17 August 2021 |archive-date=21 February 2020 |archive-url=https://web.archive.org/web/20200221195858/https://www.irishexaminer.com/breakingnews/ireland/peadar-toibin-announces-resignation-from-sinn-fein-885583.html |url-status=live}}</ref>

Sinn Féin have been accused of hypocrisy over their positions on abortion in Northern Ireland.<ref>{{cite web |last=Moore |first=Aoife |date=2021-03-16 |title=Aoife Moore: The tale of two Sinn Féins |author-link=Aoife Moore |url=https://www.irishexaminer.com/opinion/commentanalysis/arid-40245716.html |newspaper=[[Irish Examiner]] |issn=1393-9564 |location=Cork |language=en-ie |access-date=2021-07-20 |archive-date=20 July 2021 |archive-url=https://web.archive.org/web/20210720195727/https://www.irishexaminer.com/opinion/commentanalysis/arid-40245716.html |url-status=live}}</ref> In 2021, Sinn Féin abstained on a Stormont vote on restricting abortion access in the case of fetal abnormalities or disabilities, attracting criticism from both [[anti-abortion]] and pro-choice groups, with the [[Abortion Rights Campaign]] saying they "let down abortion seekers"<ref>{{cite web |date=2021-03-16 |title=Press release: Sinn Fein lets down abortion seekers and activists by abstaining on DUP vote to restrict abortion access in Stormont |url=https://www.abortionrightscampaign.ie/2021/03/16/press-release-sinn-fein-lets-down-abortion-seekers-and-activists-by-abstaining-on-dup-vote-to-restrict-abortion-access-in-stormont/ |access-date=2021-07-20 |website=Abortion Rights Campaign |language=en-GB |archive-date=20 July 2021 |archive-url=https://web.archive.org/web/20210720195725/https://www.abortionrightscampaign.ie/2021/03/16/press-release-sinn-fein-lets-down-abortion-seekers-and-activists-by-abstaining-on-dup-vote-to-restrict-abortion-access-in-stormont/ |url-status=live}}</ref> and [[Eamonn McCann]] accusing them of being "impaled on the fence on the issue", but with anti-abortion politicians such as [[Peadar Tóibín]] accusing them of "speaking out of both sides of their mouth" on the issue.<ref>{{cite web |last=Moriarty |first=Gerry |title=Sinn Féin accused of speaking 'out of both sides of their mouth' on abortion |url=https://www.irishtimes.com/news/ireland/irish-news/sinn-f%C3%A9in-accused-of-speaking-out-of-both-sides-of-their-mouth-on-abortion-1.4512180 |access-date=2021-07-20 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |archive-date=16 March 2021 |archive-url=https://web.archive.org/web/20210316233753/https://www.irishtimes.com/news/ireland/irish-news/sinn-f%C3%A9in-accused-of-speaking-out-of-both-sides-of-their-mouth-on-abortion-1.4512180 |url-status=live}}</ref> Later in the year, [[Amnesty International]] made a public statement calling on the party to "support full abortion rights across the island of Ireland".<ref>{{cite web |last=O'Sullivan |first=Kate |date=2020-06-02 |title=Sinn Féin, support full abortion rights across the island of Ireland |url=https://www.amnesty.ie/sinn-fein-abortion-rights-ireland/ |access-date=2021-07-20 |website=Amnesty International Ireland |language=en-GB |archive-date=16 March 2021 |archive-url=https://web.archive.org/web/20210316203554/https://www.amnesty.ie/sinn-fein-abortion-rights-ireland/ |url-status=live}}</ref>

====Transgender health care====

Historically the party has supported access to gender affirming healthcare for transgender individuals. However, in 2024 after the UK's Conservative Party enacted a ban on puberty blockers following the [[Cass Review]], Sinn Féin allowed the ban to be extended to Northern Ireland, closing what some considered a "loophole" regarding access to such treatments in the UK.<ref>{{Cite news |work=Irish Independent |url= https://m.independent.ie/irish-news/sinn-fein-criticised-for-backing-uk-puberty-blocker-ban-as-hse-announces-review-of-move/a303206876.html |title= Sinn Féin criticised for backing UK puberty blocker ban — as HSE announces review of move}}</ref><ref>{{Cite news |work=BBC |url= https://www.bbc.com/news/articles/c15g7e5451zo.amp |title= Protests held as puberty blocker ban extended to NI}}</ref>

=== International relations ===
{{multiple image
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| image1            = Mary Lou McDonald with Dr Hermes Herrera Hernández signing the book of condolence to Fidel Castro at the Cuban Embassy in Dublin (30489680553).jpg
| image2            = Sinn Féin pro-Palestine rally 2017.jpg
| image3            = Protest at Boris Johnson visit (48421499401).jpg
| image4            = Members of Sinn Féin with a Catalan flag.jpg
| caption1          = Mary Lou McDonald signing a book of condolences for [[Fidel Castro]] at the Cuban Embassy in Dublin in 2016
| caption2          = [[Niall Ó Donnghaile]], [[Seán Crowe]] and members of [[Ógra Shinn Féin]] at a pro-Palestine rally held by the party in Dublin in 2017
| caption3          = Members of Sinn Féin protesting against [[Brexit]] and a "hard border" being implemented between Northern Ireland and Ireland in 2019
| caption4          = [[Martin McGuinness]], [[Seán Crowe]] and [[Gerry Adams]] in 2014 showing their support for [[Catalan independence movement|Catalan independence]] by holding a red [[Estelada]]
| caption_align     = center
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}}

Sinn Féin has longstanding fraternal ties with the [[African National Congress]]<ref>{{cite web |url=https://www.derryjournal.com/news/anc-comrade-mcguinness-was-trusted-ally-south-african-people-during-apartheid-730664 |title=ANC: Comrade McGuinness was a trusted ally of the South African people during apartheid |website=www.derryjournal.com |date=24 March 2017 |access-date=21 July 2020 |archive-date=21 July 2020 |archive-url=https://web.archive.org/web/20200721150217/https://www.derryjournal.com/news/anc-comrade-mcguinness-was-trusted-ally-south-african-people-during-apartheid-730664 |url-status=live}}</ref> and was described by [[Nelson Mandela]] as an "old friend and ally in the anti-apartheid struggle".<ref>Agnès Maillot, New Sinn Féin: Irish Republicanism in the Twenty-First Century p 131.</ref> Sinn Féin supports the independence of [[Catalonia]] from Spain,<ref>{{cite web |url=http://www.thejournal.ie/catalan-independence-ireland-3669418-Oct2017/ |title=Sinn Féin calls on Irish government to recognise Catalan independence |last=Hennessy |first=Michelle |website=TheJournal.ie |date=28 October 2017 |language=en |access-date=16 January 2019 |archive-url=https://web.archive.org/web/20181215172944/https://www.thejournal.ie/catalan-independence-ireland-3669418-Oct2017/ |archive-date=15 December 2018 |url-status=live}}</ref> [[Palestine]] in the [[Israeli–Palestinian conflict]],<ref>{{cite web |url=http://www.thejournal.ie/sinn-fein-dail-recall-gaza-1589217-Jul2014/ |title=Sinn Féin and Fianna Fáil want to call TDs back from their holidays to talk about Gaza |publisher=thejournal.ie |date=25 July 2014 |access-date=20 August 2014 |archive-url=https://web.archive.org/web/20140820211311/http://www.thejournal.ie/sinn-fein-dail-recall-gaza-1589217-Jul2014/ |archive-date=20 August 2014 |url-status=live}}</ref> and the right to self-determination regarding independence of the [[Basque Country (greater region)|Basque Country]] from Spain and France.<ref>{{cite web |url=http://www.sinnfein.ie/international-affairs |title=Sinn Féin website, International Department |publisher=Sinnfein.ie |access-date=20 April 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100410052631/http://www.sinnfein.ie/international-affairs |archive-date=10 April 2010}}</ref> Sinn Féin opposes the [[United States embargo against Cuba]] and has called for a normalisation of relations between the two countries.<ref>{{cite web |url=https://www.irishtimes.com/news/adams-wants-end-to-cuban-sanctions-1.342615 |title=Adams wants end to Cuban sanctions |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=29 July 2020 |archive-date=27 January 2021 |archive-url=https://web.archive.org/web/20210127234935/https://www.irishtimes.com/news/adams-wants-end-to-cuban-sanctions-1.342615 |url-status=live}}</ref> In 2016, the Sinn Féin party president, [[Gerry Adams]] was invited by the Cuban government to attend the state funeral of [[Fidel Castro]] whom Adams described as a "freedom fighter" and a "friend of Ireland's struggle".<ref>{{cite web |url=https://www.greenleft.org.au/content/sinn-f%C3%A9ins-gerry-adams-%E2%80%98fidel-castro-hero-and-friend-ireland%E2%80%99 |title=Sinn Féin's Gerry Adams: 'Fidel Castro a hero and friend of Ireland' |date=6 December 2016 |website=Green Left |access-date=29 July 2020 |archive-date=7 August 2020 |archive-url=https://web.archive.org/web/20200807071622/https://www.greenleft.org.au/content/sinn-f%C3%A9ins-gerry-adams-%E2%80%98fidel-castro-hero-and-friend-ireland%E2%80%99 |url-status=live}}</ref> Sinn Féin is opposed to [[NATO]] membership.<ref>{{cite web |url=https://www.sinnfein.ie/files/2018/AOS_Neutrality_Doc_Final.pdf |title=Defending Irish Neutrality – an alternative to the approach of the Irish Government |date=April 2018 |website=Sinn Féin |access-date=28 April 2022 |archive-date=17 August 2021 |archive-url=https://web.archive.org/web/20210817084619/https://www.sinnfein.ie/files/2018/AOS_Neutrality_Doc_Final.pdf |url-status=live }}</ref><ref>{{cite tweet |user=sinnfeinireland |number=1115700170266685446 |title=A Sinn Féin Govt would; Hold a referendum to enshrine neutrality in the Irish constitution. Stop the US Military from transporting military equipment through Shannon Airport. Oppose a European Army & end Ireland's participation in EU Battle Groups/NATO's Partnership for Peace |date=9 April 2019}}</ref><ref>{{cite web |url=http://www.sinnfein.org/releases/97dailmanifesto/n.html |title=1997 Dail Manifesto: Neutrality |date=1997 |website=Sinn Féin |access-date=28 April 2022 |archive-date=7 September 2015 |archive-url=https://web.archive.org/web/20150907232146/http://www.sinnfein.org/releases/97dailmanifesto/n.html |url-status=live }}</ref>

==== European Union ====
Historically, Sinn Féin has been considered to be [[Euroscepticism|Eurosceptic]].<ref>{{cite web |url=http://www.ft.com/intl/cms/s/0/17a7879a-3210-11e0-a820-00144feabdc0.html#axzz2TFbh6mV3 |title=Sinn Féin set to capitalise on Irish discontent |author=John Murray Brown |date=6 February 2011 |newspaper=[[Financial Times]] |location=London |access-date=14 May 2013 |archive-url=https://web.archive.org/web/20200520165115/http://www.ft.com/intl/cms/s/0/17a7879a-3210-11e0-a820-00144feabdc0.html#axzz2TFbh6mV3 |archive-date=20 May 2020}}</ref><ref>{{cite news |url=https://news.bbc.co.uk/democracylive/hi/guides/newsid_8214000/8214446.stm |work=[[BBC News]] |title=Groups in the European Parliament |date=31 May 2011 |access-date=14 May 2014 |archive-url=https://web.archive.org/web/20140511052449/http://news.bbc.co.uk/democracylive/hi/guides/newsid_8214000/8214446.stm |archive-date=11 May 2014 |url-status=live}}</ref> The party campaigned for a "No" vote in the Irish [[Third Amendment of the Constitution of Ireland|referendum]] on joining the [[European Economic Community]] in 1972.<ref>{{cite web |title=If You Believe in a Prosperous And Independent Ireland ... Vote No |url=http://irishelectionliterature.com/2013/11/18/if-you-believe-in-a-prosperous-and-independent-ireland-vote-no-sinn-fein-1972-referendum-on-eec/ |website=Irish Election Literature |access-date=29 January 2016 |archive-url=https://web.archive.org/web/20160204011401/http://irishelectionliterature.com/2013/11/18/if-you-believe-in-a-prosperous-and-independent-ireland-vote-no-sinn-fein-1972-referendum-on-eec/ |archive-date=4 February 2016 |url-status=live |date=18 November 2013}}</ref> Sinn Féin was on the same side of the debate as the DUP and most of the [[Ulster Unionist Party]] (UUP) in that they wanted to pull out when UK had its referendum in 1975.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fref70s.htm |title=The Referendums of 1973 and 1975 |publisher=Ark.ac.uk |access-date=9 April 2018 |archive-url=https://web.archive.org/web/20171017003823/http://www.ark.ac.uk/elections/fref70s.htm |archive-date=17 October 2017 |url-status=live}}</ref> The party was critical of the supposed need for an [[Treaty establishing a Constitution for Europe|EU constitution]] as proposed in 2002,<ref name="Holmes2005">{{cite book |first=Michael |last=Holmes |title=Ireland and the European Union: Nice, Enlargement and the Future of Europe |url=https://books.google.com/books?id=DncQ0PBp17oC&pg=PA163 |date=29 November 2005 |publisher=[[Manchester University Press]] |isbn=978-0-7190-7173-7 |page=163 |access-date=29 January 2016 |archive-url=https://web.archive.org/web/20160529153724/https://books.google.com/books?id=DncQ0PBp17oC&pg=PA163 |archive-date=29 May 2016 |url-status=live}}</ref> and urged a "No" vote in the 2008 referendum on the [[Treaty of Lisbon|Lisbon Treaty]], although Mary Lou McDonald said that there was "no contradiction in being pro-Europe, but anti-treaty".<ref>{{cite news |last1=O'Doherty |first1=Caroline |title=Sinn Féin urges treaty no vote in newsletter blitz |url=http://www.irishexaminer.com/archives/2008/0206/world/sinn-fein-urges-treaty-no-vote-in-newsletter-blitz-54519.html |access-date=29 January 2016 |date=26 May 2008 |newspaper=[[Irish Examiner]] |issn=1393-9564 |location=Cork |language=en-ie |archive-url=https://web.archive.org/web/20160203182436/http://www.irishexaminer.com/archives/2008/0206/world/sinn-fein-urges-treaty-no-vote-in-newsletter-blitz-54519.html |archive-date=3 February 2016 |url-status=live}}</ref> In its manifesto for the [[2015 United Kingdom general election|2015 UK general election]], Sinn Féin pledged that the party would campaign for the UK to stay within the [[European Union]] (EU), with Martin McGuinness saying that an exit "would be absolutely economically disastrous". Gerry Adams said that, if there were to be a referendum on the question, there ought to be a separate and binding referendum for Northern Ireland.<ref name="Irish Times EU">{{cite news |url=http://www.irishtimes.com/news/politics/sf-says-north-should-be-able-stay-in-eu-in-a-brexit-1.2182397 |last1=Moriarty |first1=Gerry |title=SF says North should be able stay in EU in a Brexit |date=20 April 2015 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=29 January 2016 |archive-url=https://web.archive.org/web/20160304102709/http://www.irishtimes.com/news/politics/sf-says-north-should-be-able-stay-in-eu-in-a-brexit-1.2182397 |archive-date=4 March 2016 |url-status=live}}</ref> Its policy of a "Europe of Equals", and its critical engagement after 2001, together with its engagement with the [[European Parliament]], marks a change from the party's previous opposition to the EU. The party expresses, on one hand, "support for Europe-wide measures that promote and enhance human rights, equality and the [[United Ireland|all-Ireland agenda]]", and on the other a "principled opposition" to a [[European Federation|European superstate]].{{sfn|Bean|2008|page=171}} This has led political commentators to define the party as [[soft Euroscepticism|soft Eurosceptic]] since the 21st century.<ref>{{cite book |chapter-url=https://books.google.com/books?id=XCNXWu1oELEC&dq=Sinn+Fein+soft+Eurosceptic&pg=PA186 |chapter=Irish Euroscepticism |first=Karin |last=Gilland |title=Euroscepticism: Party Politics, National Identity and European Integration |page=186 |isbn=9789042011687 |editor1-first=Robert |editor1-last=Harmsen |editor2-first=Menno |editor2-last=Spiering |publisher=Rodopi |place=Amsterdam |date=2004 |via=Google Books |archive-url=https://web.archive.org/web/20190228192039/https://books.google.co.uk/books?id=XCNXWu1oELEC&pg=PA186&dq=Sinn+Fein+soft+Eurosceptic&hl=en&sa=X&ved=0ahUKEwj74M7D-N3gAhXm1uAKHT00ByAQ6AEIKDAA#v=onepage&q=Sinn%20Fein%20soft%20Eurosceptic&f=false |archive-date=28 February 2019}}</ref>

Since moving to this "soft Euroscepticism" position, Sinn Féin support a policy of "critical engagement with the EU", and have a "principled opposition" to a [[European superstate]]. It opposes an [[EU constitution]] because it would reduce the [[sovereignty]] of the member-states.<ref>{{cite web |first=Arthur |last=Beesley |url=https://www.irishtimes.com/news/sinn-fein-to-ask-voters-to-reject-eu-superstate-constitution-1.366224 |title=Sinn Fein to ask voters to reject EU 'superstate' constitution |date=16 July 2003 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=9 April 2018 |archive-url=https://web.archive.org/web/20170909235922/https://www.irishtimes.com/news/sinn-fein-to-ask-voters-to-reject-eu-superstate-constitution-1.366224 |archive-date=9 September 2017 |url-status=live}}</ref><ref>{{cite news |url=https://www.irishtimes.com/news/sf-opposes-creation-of-eu-superstate-1.980943 |title=SF opposes creation of EU 'superstate' |date=1 June 2004 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=9 April 2018 |archive-date=4 October 2021 |archive-url=https://web.archive.org/web/20211004111407/https://www.irishtimes.com/news/sf-opposes-creation-of-eu-superstate-1.980943 |url-status=live }}</ref> It also critiques the EU on grounds of [[neoliberalism]]. Sinn Féin [[Member of the European Parliament|MEP]] [[Matt Carthy]] says "the European Union must become a cooperative union of nation states committed to working together on issues such as climate change, migration, trade, and using our common strengths to improve the lives of citizens. If it does not, EU disintegration becomes a real possibility".<ref>{{cite web |url=http://www.mattcarthy.ie/eu-must-change-direction-or-risk-disintegration/ |title=EU must change direction or risk disintegration |publisher=Matt Carthy |date=27 April 2017 |access-date=9 April 2018 |archive-url=https://web.archive.org/web/20170909234309/http://www.mattcarthy.ie/eu-must-change-direction-or-risk-disintegration/ |archive-date=9 September 2017 |url-status=live}}</ref> The party supported continued UK membership of the [[European Union]] in the UK's [[2016 United Kingdom European Union membership referendum|2016 EU referendum]]<ref>{{cite news |title=Sinn Fein to spell out Brexit opposition to Theresa May |url=https://www.belfasttelegraph.co.uk/news/northern-ireland/sinn-fein-to-spell-out-brexit-opposition-to-theresa-may-35548291.html |date=20 March 2017|newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=30 August 2018 |archive-url=https://web.archive.org/web/20180830174113/https://www.belfasttelegraph.co.uk/news/northern-ireland/sinn-fein-to-spell-out-brexit-opposition-to-theresa-may-35548291.html |archive-date=30 August 2018 |url-status=live}}</ref> and in April 2022, Mary Lou McDonald said in the Dáil that "We strongly support the Ukrainian people's stated desire to join the European Union".<ref>{{cite AV media |people= |date= |title=LIVE: Ukrainian President Zelenskiy addresses Irish parliament |trans-title= |type=video |language= |url=https://www.youtube.com/watch?v=zwdqhb0Ju_c&ab_channel=Reuters |access-date=7 April 2022 |archive-url=https://web.archive.org/web/20220407052759/https://www.youtube.com/watch?v=zwdqhb0Ju_c&ab_channel=Reuters |archive-date=7 April 2022 |format= |time=44:00 |location= |publisher=[[Reuters]] |id= |isbn= |oclc= |quote= |url-status=live }}</ref>

== Leadership history ==
{{main|President of Sinn Féin}}
{|class="wikitable"
|-
!Name
!Dates
!Notes
|-
|[[Edward Martyn]]
|1905–1908
|
|-
|[[John Sweetman]]
|1908–1911
|
|-
|[[Arthur Griffith]]
|1911–1917
|
|-
|[[Éamon de Valera]]
|1917–1926
|Resigned from Sinn Féin and formed [[Fianna Fáil]] in 1926
|-
|[[John J. O'Kelly]] (Sceilg)
|1926–1931
|
|-
|[[Brian O'Higgins]]
|1931–1933
|
|-
|[[Michael O'Flanagan]]
|1933–1935
|
|-
|[[Cathal Ó Murchadha]]
|1935–1937
|
|-
|[[Margaret Buckley]]
|1937–1950
|Party's first woman president.
|-
|[[Paddy McLogan]]
|1950–1952
|
|-
|[[Tomás Ó Dubhghaill]]
|1952–1954
|
|-
|[[Paddy McLogan]]
|1954–1962
|
|-
|[[Tomás Mac Giolla]]
|1962–1970
|From 1970 was president of Official Sinn Féin, renamed The Workers' Party in 1982.
|-
|[[Ruairí Ó Brádaigh]]
|1970–1983
|Left Sinn Féin and formed Republican Sinn Féin in 1986.
|-
|[[Gerry Adams]]
|1983–2018
|Longest-served president in the party's history and TD for [[Louth (Dáil constituency)|Louth]] from 2011 to 2020.
|-
|[[Mary Lou McDonald]]
|2018–present
|TD for [[Dublin Central (Dáil constituency)|Dublin Central]] since 2011.
|}

== Ministers and spokespeople ==
=== Northern Ireland ===
{{See also|Executive of the 7th Northern Ireland Assembly}}

*[[First Minister and deputy First Minister of Northern Ireland|First Minister]]: [[Michelle O'Neill]] 
*[[Junior Minister (Northern Ireland)|Junior Minister]]: [[Aisling Reilly]] 
*[[Department for the Economy|Minister for the Economy]]: [[Caoimhe Archibald]]
*[[Department of Finance (Northern Ireland)#Ministers of Finance|Minister of Finance]]: [[John O'Dowd]]
*[[Department for Infrastructure (Northern Ireland)|Minister of Infrastructure]]: [[Liz Kimmins]]

=== Republic of Ireland ===
{{See also|Sinn Féin Front Bench}}

{| class="wikitable"
|-
!Portfolio
!Name
|-
|'''[[Leader of the Opposition (Ireland)|Leader of the Opposition]]'''<br />'''[[President of Sinn Féin]]'''
|[[Mary Lou McDonald]] 
|-
|Deputy Leader of Sinn Féin in the [[Dáil Éireann|Dáil]]<br />Spokesperson on [[Minister for Finance (Ireland)|Finance]]
|[[Pearse Doherty]]
|-
|Spokesperson on [[Minister for Public Expenditure, Infrastructure, Public Service Reform and Digitalisation|Public Expenditure, Infrastructure, Public Service Reform and Digitalisation]]
|[[Mairéad Farrell (politician)|Mairéad Farrell]]
|-
|Spokesperson on [[Minister for Education and Youth|Education and Youth]]
|[[Darren O'Rourke]]
|-
|Spokesperson on [[Minister for Climate, Energy and the Environment|Environment and Climate Action]]
|[[Pa Daly]]
|-
|Spokesperson on [[Minister for Rural and Community Development and the Gaeltacht|Community and Rural Development]] 
|rowspan=2|[[Louise O'Reilly]]
|-
|Spokesperson on [[Minister for Social Protection|Social Protection]] 
|-
|Spokesperson on [[Minister for Defence (Ireland)|Defence]]
|rowspan=2|[[Donnchadh Ó Laoghaire]]
|-
|Spokesperson on [[Minister for Foreign Affairs and Trade|Foreign Affairs and Trade]]
|-
|Spokesperson on [[Minister for Children, Disability and Equality|Children, Disability and Equality]]
|[[Claire Kerrane]]
|-
|Spokesperson on [[Minister for Enterprise, Tourism and Employment|Enterprise and Tourism]]
|[[Rose Conway-Walsh]]
|-
|Spokesperson on [[Minister for Health (Ireland)|Health]]
|[[David Cullinane]]
|-
|Spokesperson on [[Minister for Culture, Communications and Sport|Arts, Media, Communications, Culture and Sport]]
|[[Joanna Byrne]]
|-
|Spokesperson on [[Minister for Culture, Communications and Sport|Gaeilge and the Gaeltacht]]
|[[Aengus Ó Snodaigh]]
|-
|Spokesperson on [[Minister for Housing, Local Government and Heritage|Housing, Local Government and Heritage]]
|[[Eoin Ó Broin]]
|-
|Spokesperson on [[Minister for Justice, Home Affairs and Migration|Justice, Home Affairs and Migration]]
|[[Matt Carthy]]
|-
|Spokesperson on [[Minister for Further and Higher Education, Research, Innovation and Science|Further and Higher Education, Research, Innovation and Science]]
|[[Donna McGettigan]] 
|-
|Spokesperson on [[Minister for Agriculture, Food and the Marine|Agriculture, Food and the Marine]]
|[[Martin Kenny]]
|}
[[Pádraig Mac Lochlainn]] serves as the party's [[Chief Whip]] in the Dáil.

==Election results==
{{See also|Sinn Féin election results|Sinn Féin Westminster election results}}
=== Northern Ireland ===
==== Devolved legislature elections ====
{|class="wikitable" style="font-size:97%; text-align:center;"
|-
! Election
! Leader
! Body
! Votes
! %
! Seats
! +/–
! Position
! Status
|-
! [[1921 Northern Ireland general election|1921]]
| [[Éamon de Valera]]
| [[House of Commons of Northern Ireland|House of Commons]]
| 104,917
| 20.5
| {{Composition bar|6|52|hex={{party color|Sinn Féin}}}}
| {{increase}} 6
| {{increase}} 2nd
| {{shade|color=blue|50|Abstention}}
|-
! [[1982 Northern Ireland Assembly election|1982]]
| [[Ruairí Ó Brádaigh]]
| [[Northern Ireland Assembly (1982)|Assembly]]
| 64,191
| 10.1
| {{Composition bar|5|78|hex={{party color|Sinn Féin}}}}
| {{increase}} 5
| {{increase}} 5th
| {{shade|color=blue|50|Abstention}}
|-
! [[Northern Ireland Forum|1996]]
| rowspan="7" | [[Gerry Adams]]
| [[Members of the Northern Ireland Forum|Forum]]
| 116,377
| 15.5
| {{Composition bar|17|110|hex={{party color|Sinn Féin}}}}
| {{increase}} 17
| {{increase}} 4th
| {{shade|color=blue|50|Abstention}}
|-
! [[1998 Northern Ireland Assembly election|1998]]
| rowspan="7" | [[Northern Ireland Assembly|Assembly]]
| 142,858
| 17.7
| {{Composition bar|18|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 18
| {{increase}} 4th
| {{yes2|Coalition}}
|-
! [[2003 Northern Ireland Assembly election|2003]]
| 162,758
| 23.5
| {{Composition bar|24|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 6
| {{increase}} 3rd
| {{no result|Direct rule}}
|-
! [[2007 Northern Ireland Assembly election|2007]]
| 180,573
| 26.2
| {{Composition bar|28|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 4
| {{increase}} 2nd
| {{yes2|Coalition}}
|-
! [[2011 Northern Ireland Assembly election|2011]]
| 178,224
| 26.3
| {{Composition bar|29|108|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2016 Northern Ireland Assembly election|2016]]
| 166,785
| 24.0
| {{Composition bar|28|108|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2017 Northern Ireland Assembly election|2017]]
| 224,245
| 27.9
| {{Composition bar|27|90|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{steady}} 2nd
| {{yes2|Coalition}}
|-
! [[2022 Northern Ireland Assembly election|2022]]
| [[Mary Lou McDonald]]
| 250,388
| 29.0
| {{Composition bar|27|90|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 1st
| {{yes2|Coalition}}
|}

====Westminster elections====
{|class="wikitable" style="font-size:97%; text-align:center;"
|-
! rowspan=2 | Election
! rowspan=2 | Leader
! rowspan=2 | Votes
! colspan=2 | %
! rowspan=2 | Seats<br/>{{abbr|(NI)|Northern Ireland}}
! rowspan=2 | +/–
! rowspan=2 | Position
! rowspan=2 | Status
|-
! {{abbr|NI|Northern Ireland}}
! {{abbr|UK|United Kingdom}}
|-
! [[1924 United Kingdom general election|1924]]
| [[Éamon de Valera]]
| 34,181
| rowspan=4|
| 0.2
| {{Composition bar|0|13|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 9th
| {{N/A|No seats}}
|-
! [[1950 United Kingdom general election|1950]]
| [[Margaret Buckley]]
| 23,362
| 0.1
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{decrease}} 11th
| {{N/A|No seats}}
|-
! [[1955 United Kingdom general election|1955]]
| rowspan="2" | [[Paddy McLogan]]
| 152,310
| 0.6
| {{Composition bar|2|12|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 4th
| {{shade|color=blue|50|Abstention}}
|-
! [[1959 United Kingdom general election|1959]]
| 63,415
| 0.2
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{decrease}} 2
| {{decrease}} 5th
| {{N/A|No seats}}
|-
! [[1983 United Kingdom general election|1983]]
| [[Ruairí Ó Brádaigh]]
| 102,701
| 13.4
| 0.3
| {{Composition bar|1|17|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{increase}} 8th
| {{shade|color=blue|50|Abstention}}
|-
! [[1987 United Kingdom general election|1987]]
| rowspan="8" |[[Gerry Adams]]
| 83,389
| 11.4
| 0.3
| {{Composition bar|1|17|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{increase}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[1992 United Kingdom general election|1992]]
| 78,291
| 10.0
| 0.2
| {{Composition bar|0|17|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
| {{decrease}} 11th
| {{N/A|No seats}}
|-
! [[1997 United Kingdom general election|1997]]
| 126,921
| 16.1
| 0.4
| {{Composition bar|2|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 8th
| {{shade|color=blue|50|Abstention}}
|-
! [[2001 United Kingdom general election|2001]]
| 175,933
| 21.7
| 0.7
| {{Composition bar|4|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 2
| {{increase}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2005 United Kingdom general election|2005]]
| 174,530
| 24.3
| 0.6
| {{Composition bar|5|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2010 United Kingdom general election|2010]]
| 171,942
| 25.5
| 0.6
| {{Composition bar|5|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2015 United Kingdom general election|2015]]
| 176,232
| 24.5
| 0.6
| {{Composition bar|4|18|hex={{party color|Sinn Féin}}}}
| {{decrease}}  1
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2017 United Kingdom general election|2017]]
| 238,915
| 29.4
| 0.7
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{increase}} 3
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2019 United Kingdom general election|2019]]
| rowspan="2" |[[Mary Lou McDonald]]
| 181,853
| 22.8
| 0.6
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{steady}} 6th
| {{shade|color=blue|50|Abstention}}
|-
! [[2024 United Kingdom general election|2024]]
| 210,891
| 27.0
| 0.7
| {{Composition bar|7|18|hex={{party color|Sinn Féin}}}}
| {{steady}} 
| {{up}} 5th
| {{shade|color=blue|50|Abstention}}
|}

====Trends====
{{original research section|date=February 2020}}
Sinn Féin returned to Northern Ireland elections at the [[1982 Northern Ireland Assembly election|1982 Assembly elections]], winning five seats with 64,191 votes (10.1%). The party narrowly missed winning additional seats in [[Belfast North (Assembly constituency)|Belfast North]] and [[Fermanagh and South Tyrone (UK Parliament constituency)|Fermanagh and South Tyrone]]. In the 1983 UK general election eight months later, Sinn Féin increased its support, breaking the six-figure vote barrier in Northern Ireland for the first time by polling 102,701 votes (13.4%).<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw83.htm |title=Westminster election 1983 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020330194837/http://www.ark.ac.uk/elections/fw83.htm |archive-date=30 March 2002 |url-status=live}}</ref> Gerry Adams won the Belfast West constituency, and Danny Morrison fell only 78 votes short of victory in [[Mid Ulster (UK Parliament constituency)|Mid Ulster]].

The [[1984 European Parliament election in the United Kingdom|1984 European elections]] proved to be a disappointment, with Sinn Féin's candidate Danny Morrison polling 91,476 (13.3%) and falling well behind the SDLP candidate [[John Hume]].

By the beginning of 1985, Sinn Féin had won its first representation on local councils, owing to three by-election wins in Omagh (Seamus Kerr, May 1983) and Belfast (Alex Maskey in June 1983 and [[Belfast Area F#1984 by-election|Sean McKnight in March 1984]]). Three sitting councillors also defected to Sinn Féin in Dungannon, Fermanagh and Derry (the last defecting from the SDLP).<ref>The three were S. Cassidy (Dungannon), J. J. McCusker (Fermanagh) and W. McCartney (Derry).</ref><ref>{{cite web |url=http://www.ark.ac.uk/elections/flg81.htm |title=Local Government Elections 1981 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20090402043019/http://www.ark.ac.uk/elections/flg81.htm |archive-date=2 April 2009 |url-status=live}}</ref><ref name="1985 local election results">{{cite web |url=http://www.ark.ac.uk/elections/flg85.htm |title=Local Government Elections 1985 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20100413182605/http://www.ark.ac.uk/elections/flg85.htm |archive-date=13 April 2010 |url-status=live}}</ref> Sinn Féin succeeded in winning 59 seats in the [[1985 Northern Ireland local elections|1985 local government elections]], after it had predicted winning only 40 seats. However, the results continued to show a decline from the peak of 1983, as the party won 75,686 votes (11.8%).<ref name="1985 local election results" /> The party failed to gain any seats in the [[1986 Northern Ireland by-elections|1986 by-elections]] caused by the resignation of unionist MPs in protest at the [[Anglo-Irish Agreement]]. While this was partly due to an electoral pact between unionist candidates, the SF vote fell in the four constituencies they contested.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw86.htm |title=Westminster by-elections 1986 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20161228122705/http://www.ark.ac.uk/elections/fw86.htm |archive-date=28 December 2016 |url-status=live}}</ref>

In the [[1987 United Kingdom general election|1987 general election]], Gerry Adams held his Belfast West seat, but the party failed to make breakthroughs elsewhere and overall polled 83,389 votes (11.4%).<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw87.htm |title=Westminster election 1987 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020425125808/http://www.ark.ac.uk/elections/fw87.htm |archive-date=25 April 2002 |url-status=live}}</ref> The same year saw the party contest the Dáil election in the Republic of Ireland; however, it failed to win any seats and polled less than 2%.

The [[1989 Northern Ireland local elections|1989 local government elections]] saw a drop in support for Sinn Féin.<ref>{{cite web |url=http://www.ark.ac.uk/elections/flg89.htm |title=Local Government Elections 1989 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20031207133631/http://www.ark.ac.uk/elections/flg89.htm |archive-date=7 December 2003 |url-status=live}}</ref> Defending 58 seats (the 59 won in 1985, plus two 1987 by-election gains in West Belfast, minus three councillors who had defected to Republican Sinn Féin in 1986), the party lost 15 seats. In the aftermath of the election, Mitchell McLaughlin admitted that recent IRA activity had affected the Sinn Féin vote.<ref>quoted in Gordon Lucy, The Northern Ireland Local Government Elections of 1993, Ulster Society Press.</ref>

In the [[1989 European Parliament election in the United Kingdom|1989 European election]], Danny Morrison again failed to win a seat, polling at 48,914 votes (9%).

The nadir for SF in this period came in 1992, with Gerry Adams losing his Belfast West seat to the SDLP, and the SF vote falling in the other constituencies that they had contested relative to 1987.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw92.htm |title=Westminster election 1992 |publisher=Ark.ac.uk |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20020330205251/http://www.ark.ac.uk/elections/fw92.htm |archive-date=30 March 2002 |url-status=live}}</ref>

In the [[1997 United Kingdom general election|1997 UK general election]], Adams regained Belfast West. [[Martin McGuinness]] also won a seat in [[Mid Ulster (UK Parliament constituency)|Mid Ulster]]. In the [[1997 Irish general election|Irish general election the same year]] the party won its first seat since [[1957 Irish general election|1957]], with [[Caoimhghín Ó Caoláin]] gaining a seat in the [[Cavan–Monaghan (Dáil constituency)|Cavan–Monaghan]] constituency. In the [[1999 Irish local elections|Irish local elections of 1999]] the party increased its number of councillors from 7 to 23.

The party overtook its nationalist rival, the Social Democratic and Labour Party, as the largest nationalist party in the [[2001 Northern Ireland local elections|local elections]] and [[United Kingdom general election, 2001 (Northern Ireland)|UK general election]] of 2001, winning four Westminster seats to the SDLP's three.<ref>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw01.htm |title=The 2001 Westminster elections in Northern Ireland |publisher=Ark.ac.uk |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20081203232122/http://www.ark.ac.uk/elections/fw01.htm |archive-date=3 December 2008 |url-status=live}}</ref> The party continues to subscribe, however, to an [[abstentionism|abstentionist]] policy towards the Westminster British parliament, on account of opposing that parliament's jurisdiction in Northern Ireland, as well as its oath to the King.<ref>{{cite web |url=http://www.parliament.uk/about/how/elections-and-voting/swearingin/ |title=Swearing in and the parliamentary oath |publisher=parliament.uk |access-date=14 May 2013 |archive-url=https://web.archive.org/web/20130705150737/http://www.parliament.uk/about/how/elections-and-voting/swearingin/ |archive-date=5 July 2013 |url-status=live}}</ref><ref>{{cite web |title=Sinn Féin press release |url=http://www.sinnfein.org/releases/01/pr011812d.html |publisher=Sinn Féin |date=18 December 2001 |access-date=16 August 2008 |archive-url=https://web.archive.org/web/20090518010357/http://www.sinnfein.org/releases/01/pr011812d.html |archive-date=18 May 2009 |url-status=live}}</ref>
[[File:Northern Ireland election seats 1997-2019.svg|thumb|right|300px|Results in Northern Ireland from UK general elections. Sinn Féin increased its number of seats from two in 1997 to five in 2005, four of them in the west. It retained its five seats in 2010, was reduced to four in 2015 before increasing to seven in 2017.]]

Sinn Féin increased its share of the nationalist vote in the [[2003 Northern Ireland Assembly election|2003]], [[2007 Northern Ireland Assembly election|2007]], and [[2011 Northern Ireland Assembly election|2011 Assembly elections]], with [[Martin McGuinness]], former Minister for Education, taking the post of [[Deputy First Minister of Northern Ireland|Deputy First Minister]] in the Northern Ireland power-sharing Executive Committee. The party has three ministers in the Executive.

In the [[2010 United Kingdom general election in Northern Ireland|2010 general election]], the party retained its five seats,<ref name="BBCE">{{cite news |author=Political Party Seats Change Democratic Unionist Party |url=https://news.bbc.co.uk/2/shared/election2010/results/region/6.stm |title=Northern Ireland General election results 2010 |work=BBC News |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20101221000149/http://news.bbc.co.uk/2/shared/election2010/results/region/6.stm |archive-date=21 December 2010 |url-status=live}}</ref> and for the first time topped the poll at a Westminster election in Northern Ireland, winning 25.5% of the vote.<ref name=ARK>{{cite web |first=Nicholas |last=Whyte |url=http://www.ark.ac.uk/elections/fw10.htm |title=The 2010 Westminster elections in Northern Ireland |publisher=Ark.ac.uk |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20170601144216/http://www.ark.ac.uk/elections/fw10.htm |archive-date=1 June 2017 |url-status=live}}</ref> All Sinn Féin MPs increased their share of the vote and with the exception of [[Fermanagh and South Tyrone (UK Parliament constituency)|Fermanagh and South Tyrone]], increased their majorities.<ref name="BBCE" /> In Fermanagh and South Tyrone, [[Ulster Unionism#Unionism in Northern Ireland today|Unionist]] parties agreed a joint candidate,<ref>{{cite news |url=https://news.bbc.co.uk/2/hi/uk_news/politics/election_2010/northern_ireland/8610725.stm |title=Unionist 'unity' candidate agreed |work=BBC News |date=9 April 2010 |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20100429145310/http://news.bbc.co.uk/2/hi/uk_news/politics/election_2010/northern_ireland/8610725.stm |archive-date=29 April 2010 |url-status=live}}</ref> this resulted in the closest contest of the election, with Sinn Féin MP [[Michelle Gildernew]] holding her seat by 4 votes after 3 recounts and an election petition challenging the result.<ref>{{cite web |url=http://www.belfasttelegraph.co.uk/news/politics/election/sinn-feins-michelle-gildernew-retains-fermanagh-after-dramatic-recounts-14799949.html |archive-url=https://archive.today/20120720082124/http://www.belfasttelegraph.co.uk/news/politics/election/sinn-feins-michelle-gildernew-retains-fermanagh-after-dramatic-recounts-14799949.html |url-status=dead |archive-date=20 July 2012 |title=Sinn Fein's Michelle Gildernew retains Fermanagh after dramatic recounts |publisher=Belfasttelegraph.co.uk |date=7 May 2010 |access-date=1 January 2011}}</ref>

Sinn Féin lost some ground in the [[2016 Northern Ireland Assembly election|2016 Assembly election]], dropping one seat to finish with 28, ten behind the DUP.<ref>{{cite news |last1=Moriarty |first1=Gerry |title=Assembly elections: DUP and Sinn Féin remain dominant |url=http://www.irishtimes.com/news/politics/assembly-elections-dup-and-sinn-f%C3%A9in-remain-dominant-1.2639747 |access-date=4 March 2017 |date=7 May 2016 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |archive-url=https://web.archive.org/web/20170305113449/http://www.irishtimes.com/news/politics/assembly-elections-dup-and-sinn-f%C3%A9in-remain-dominant-1.2639747 |archive-date=5 March 2017 |url-status=live}}</ref> In the [[2017 Northern Ireland Assembly election|snap election]] eight months later caused by the resignation of McGuinness as Deputy First Minister, however, the party surged, winning 27.9% of the popular vote to 28.1% for the DUP, and 27 seats to the DUP's 28 in an Assembly reduced by 18 seats.<ref>{{cite news |last1=Gray |first1=Dean |title=Sinn Féin closes gap on unionist rivals as middle ground collapses |url=http://www.independent.ie/irish-news/politics/sinn-fin-closes-gap-on-unionist-rivals-as-middle-ground-collapses-35500890.html |access-date=4 March 2017 |work=Irish Independent |date=4 March 2017 |archive-url=https://web.archive.org/web/20170304054107/http://www.independent.ie/irish-news/politics/sinn-fin-closes-gap-on-unionist-rivals-as-middle-ground-collapses-35500890.html |archive-date=4 March 2017 |url-status=live}}</ref><ref>{{cite news |title=Efforts to form a power-sharing administration to begin early next week |url=https://www.rte.ie/news/2017/0303/856841-northern-irelands-assembly-election/ |access-date=4 March 2017 |work=RTÉ |date=4 March 2017 |archive-url=https://web.archive.org/web/20170303071650/http://www.rte.ie/news/2017/0303/856841-northern-irelands-assembly-election/ |archive-date=3 March 2017 |url-status=live}}</ref> The withdrawal of the DUP party whip from [[Jim Wells (politician)|Jim Wells]] in May 2018 meant that Sinn Féin became the joint-largest party in the Assembly alongside the DUP, with 27 seats each.<ref>{{cite news |last1=Cross |first1=Gareth |title=It's a tie: DUP's Wells says removal of whip gives Sinn Fein equal voting power in Northern Ireland |url=https://www.belfasttelegraph.co.uk/news/politics/its-a-tie-dups-wells-says-removal-of-whip-gives-sinn-fein-equal-voting-power-in-northern-ireland-36893228.html |access-date=30 July 2018 |work=Belfast Telegraph |date=10 May 2018 |archive-url=https://web.archive.org/web/20180730140441/https://www.belfasttelegraph.co.uk/news/politics/its-a-tie-dups-wells-says-removal-of-whip-gives-sinn-fein-equal-voting-power-in-northern-ireland-36893228.html |archive-date=30 July 2018 |url-status=live}}</ref>

===Republic of Ireland===
====Dáil Éireann elections====
{|class="wikitable" style="text-align:center;"
|-
! Election
! Leader
! {{abbr|FPV|First preference votes}}
! %
! Seats
! %
! ±
! Dáil
! Government
|-
! [[1918 Irish general election|1918]]<br />{{small|(Westminster)}}
| rowspan="2"| [[Éamon de Valera]]
| 476,087
| 46.9 (#1)
| {{Composition bar|73|105|hex={{party color|Sinn Féin}}}}
| 69.5 (#1)
| ''New''
| [[1st Dáil|1st]]
| {{yes2|Government}}<br>{{small|[[Government of the 1st Dáil|1st, 2nd ministry]]<br>''(SF [[majority government|majority)]]}}
|-
! [[1921 Irish elections|1921]]<br />{{small|{{abbr|(S. Ireland HoC)|Southern Ireland House of Commons}}}}
| colspan="2" | Elected unopposed
| {{Composition bar|124|128|hex={{party color|Sinn Féin}}}}
| 96.9 (#1)
| {{increase}} 51
| [[2nd Dáil|2nd]]
| {{yes2|Government}}<br>{{small|[[Government of the 2nd Dáil|3rd, 4th ministry]]<br>''(SF majority)''}}
|-
! rowspan=2|[[1922 Irish general election|1922]]
| [[Michael Collins (Irish leader)|Michael Collins]]<br />{{small|(Pro-Treaty)}}
| 239,195
| 38.5 (#1)
| {{Composition bar|58|128|hex={{party color|Sinn Féin}}}}
| 45.3 (#1)
| rowspan="2" | {{decrease}} 30
| rowspan="2" | [[Members of the 3rd Dáil|3rd]]
| {{yes2|Government}}<br>{{small|[[Government of the 3rd Dáil|5th ministry,<br>1st executive]]<br>''(SF PT/[[Cumann na nGaedheal|CnG]] [[minority government|minority]])''}}
|-
| rowspan="2" | Éamon de Valera<br />{{small|(Anti-Treaty)}}
| 135,310
| 21.8 (#2)
| {{Composition bar|36|128|hex={{party color|Sinn Féin}}}}
| 28.1 (#2)
| {{shade|color=blue|50|[[Abstentionism|Abstention]]}}<br>{{small|5th ministry,<br>1st executive<br>''(SF PT/CnG minority)''}}
|-
! [[1923 Irish general election|1923]]
| 288,794
| 27.4 (#2)
| {{Composition bar|44|153|hex={{party color|Sinn Féin}}}}
| 28.8 (#2)
| {{increase}} 8
| [[4th Dáil|4th]]
| {{shade|color=blue|50|Abstention}}<br>{{small|[[Government of the 4th Dáil|2nd executive]]<br>''(CnG minority)''}}
|-
! [[June 1927 Irish general election|June 1927]]
| [[John J. O'Kelly]]
| 41,401
| 3.6 (#6)
| {{Composition bar|5|153|hex={{party color|Sinn Féin}}}}
| 3.3 (#2)
| {{decrease}} 39
| [[5th Dáil|5th]]
| {{shade|color=blue|50|Abstention}}<br>{{small|[[Government of the 5th Dáil|3rd executive]]<br>''(CnG minority)''}}
|-
! colspan="9" | Did not contest [[September 1927 Irish general election|September 1927 general election]] to [[1951 Irish general election|1951 general election]]
|-
! [[1954 Irish general election|1954]]
| [[Tomás Ó Dubhghaill]]
| 1,990
| 0.1 (#6)
| {{Composition bar|0|147|hex={{party color|Sinn Féin}}}}
| {{N/A}}
| {{steady}}
| [[15th Dáil|15th]]
| {{N/A|[[Extra-parliamentary|No Seats]]}}<br>{{small|[[Government of the 15th Dáil|7th government]]<br>''([[Fine Gael|FG]]-[[Labour Party (Ireland)|Lab]]-[[Clann na Talmhan|CnT]] minority)''}}
|-
! [[1957 Irish general election|1957]]
| rowspan="2"| [[Paddy McLogan]]
| 65,640
| 5.3 (#4)
| {{Composition bar|4|147|hex={{party color|Sinn Féin}}}}
| 2.6 (#4)
| {{increase}} 4
| [[16th Dáil|16th]]
| {{shade|color=blue|50|Abstention}}<br>{{small|[[Government of the 16th Dáil|8th, 9th government]]<br>''([[Fianna Fáil|FF]] majority)''}}
|-
! [[1961 Irish general election|1961]]
| 36,396
| 3.1 (#4)
| {{Composition bar|0|144|hex={{party color|Sinn Féin}}}}
| {{N/A}}
| {{decrease}} 4
| [[17th Dáil|17th]]
| {{N/A|No seats}}<br>{{small|[[Government of the 17th Dáil|10th government]]<br>''(FF majority)''}}
|-
! colspan="9" |  Did not contest [[1965 Irish general election|1965 general election]] to [[1981 Irish general election|1981 general election]]
|-
! [[February 1982 Irish general election|Feb. 1982]]
| [[Ruairí Ó Brádaigh]]
| 16,894
| 1.0 (#5)
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{N/A}}
| {{steady}}
| [[23rd Dáil|23rd]]
| {{N/A|No seats}}<br>{{small|[[Government of the 23rd Dáil|18th government]]<br>''(FF minority)''}}
|-
! colspan="9" |Did not contest [[November 1982 Irish general election|November 1982 general election]]
|-
! [[1987 Irish general election|1987]]
| rowspan="9"| [[Gerry Adams]]
| 32,933
| 1.9 (#6)
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{N/A}}
| {{steady}}
| [[25th Dáil|25th]]
| {{N/A|No seats}}<br>{{small|[[Government of the 25th Dáil|20th government]]<br>''(FF minority)''}}
|-
! [[1989 Irish general election|1989]]
| 20,003
| 1.2 (#6)
| {{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| {{N/A}}
| {{steady}}
| [[26th Dáil|26th]]
| {{N/A|No seats}}<br>{{small|[[Government of the 26th Dáil|21st, 22nd government]]<br>''(FF-[[Progressive Democrats (Ireland)|PD]] majority)''}}
|-
! rowspan="2" |[[1992 Irish general election|1992]]
| rowspan="2" |27,809
| rowspan="2" | 1.6 (#7)
| rowspan="2" |{{Composition bar|0|166|hex={{party color|Sinn Féin}}}}
| style="background:#EAECF0" rowspan="2" |—
| rowspan="2" |{{steady}}
| rowspan="2" |[[27th Dáil|27th]]
| {{N/A|No seats}}<br>{{small|[[23rd government of Ireland|23rd government]]<br>''(FF-Lab majority)''}}
|-
| {{N/A|No seats}}<br>{{small|[[24th government of Ireland|24th government]]<br>''(FG-Lab-[[Democratic Left (Ireland)|DL]] majority)''}}
|-
! [[1997 Irish general election|1997]]
| 45,614
| 2.5 (#7)
| {{Composition bar|1|166|hex={{party color|Sinn Féin}}}}
| 0.6 (#7)
| {{increase}} 1
| [[28th Dáil|28th]]
| {{no2|[[Parliamentary opposition|Opposition]]}}<br>{{small|[[Government of the 28th Dáil|25th government]]<br>''(FF-PD minority)''}}
|-
! [[2002 Irish general election|2002]]
| 121,020
| 6.5 (#6)
| {{Composition bar|5|166|hex={{party color|Sinn Féin}}}}
| 3.0 (#6)
| {{increase}} 4
| [[29th Dáil|29th]]
| {{no2|Opposition}}<br>{{small|[[Government of the 29th Dáil|26th government]]<br>''(FF-PD majority)''}}
|-
! [[2007 Irish general election|2007]]
| 143,410
| 6.9 (#5)
| {{Composition bar|4|166|hex={{party color|Sinn Féin}}}}
| 2.4 (#6)
| {{decrease}} 1
| [[30th Dáil|30th]]
| {{no2|Opposition}}<br>{{small|[[Government of the 30th Dáil|27th, 28th government]]<br>''(FF-[[Green Party (Ireland)|GP]]-PD/Ind majority)''}}
|-
! [[2011 Irish general election|2011]]
| 220,661
| 9.9 (#4)
| {{Composition bar|14|166|hex={{party color|Sinn Féin}}}}
| 8.4 (#4)
| {{increase}} 10
| [[31st Dáil|31st]]
| {{no2|Opposition}}<br>{{small|[[Government of the 31st Dáil|29th government]]<br>''(FG-Lab [[supermajority]])''}}
|-
! [[2016 Irish general election|2016]]
| 295,319
| 13.8 (#3)
| {{Composition bar|23|158|hex={{party color|Sinn Féin}}}}
| 14.6 (#3)
| {{increase}} 9
| [[32nd Dáil|32nd]]
| {{no2|Opposition}}<br>{{small|[[Government of the 32nd Dáil|30th, 31st government]]<br>''(FG-[[Independent politician (Ireland)|Ind]] minority)''}}
|-
! [[2020 Irish general election|2020]]
| rowspan=2 | [[Mary Lou McDonald]]
| 535,595
| 24.5 (#1)
| {{Composition bar|37|160|hex={{party color|Sinn Féin}}}}
| 23.1 (#2)
| {{increase}} 14
| [[33rd Dáil|33rd]]
| {{no2|Opposition}}<br>{{nowrap|{{small|[[Government of the 33rd Dáil|32nd, 33rd, 34th government]]<br>''(FF-FG-GP majority)''}}}}
|-
! [[2024 Irish general election|2024]]
| 418,627
| 19.0 (#3)
| {{Composition bar|39|174|hex={{party color|Sinn Féin}}}}
| 22.4 (#2)
| {{increase}} 2
| [[34th Dáil|34th]]
| {{no2|Opposition}}<br>{{small|[[Government of the 34th Dáil|35th government]]<br>''(FF-FG-Ind majority)''}}
|}

The party had five TDs elected in the [[2002 Irish general election]], an increase of four from the previous election. At the [[2007 Irish general election|general election in 2007]] the party had expectations of substantial gains,<ref>{{cite web |url=http://www.sinnfein.ie/contents/9022 |title=Sinn Féin up and running for General Election |publisher=Sinn Fein |date=29 April 2007  |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20100504183645/http://www.sinnfein.ie/contents/9022 |archive-date=4 May 2010 |url-status=dead}}</ref><ref>{{cite news |url=http://www.anphoblacht.com/news/detail/18472 |title=Dáil General Election Profile : Councillor Gerry Murray, Mayo |date=29 March 2007 |newspaper=[[An Phoblacht]] |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20120229170005/http://www.anphoblacht.com/news/detail/18472 |archive-date=29 February 2012 |url-status=dead}}</ref> with poll predictions that they would gain five<ref>{{cite news |url=https://www.telegraph.co.uk/news/uknews/1552197/Sinn-Fein-looks-to-coalition-with-Republic.html |title=Sinn Fein looks to coalition with Republic |first=Tom |last=Peterkin |date=21 May 2007 |access-date=20 April 2010 |newspaper=[[Daily Telegraph]] |location=London |archive-url=https://web.archive.org/web/20111212024853/http://www.telegraph.co.uk/news/uknews/1552197/Sinn-Fein-looks-to-coalition-with-Republic.html |archive-date=12 December 2011 |url-status=live}}</ref> to ten seats.<ref>{{cite news |first=Henry |last=McDonald |url=https://www.theguardian.com/world/2007/may/27/ireland2 |title=Sinn Fein's hopes dashed in Irish elections |date=27 May 2007 |newspaper=[[The Observer]] |location=London |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20130831080210/http://www.theguardian.com/world/2007/may/27/ireland2 |archive-date=31 August 2013 |url-status=live}}</ref> However, the party lost one of its seats to [[Fine Gael]]. [[Seán Crowe]], who had topped the poll in [[Dublin South-West (Dáil constituency)|Dublin South-West]] fell to fifth place, with his first preference vote reduced from 20.28% to 12.16%.<ref name=2007results>{{cite news |title=Results 2007 |newspaper=[[The Irish Times]] |date=28 May 2007}}</ref>

On 26 November 2010, [[Pearse Doherty]] won a seat in the [[2010 Donegal South-West by-election|Donegal South-West by-election]]. It was the party's first by-election victory in the [[Republic of Ireland]] since 1925.<ref>{{cite web |url=http://www.belfasttelegraph.co.uk/news/local-national/republic-of-ireland/sinn-fein-wins-by-landslide-in-donegal-southwest-byelection-15015148.html |archive-url=https://archive.today/20120719235813/http://www.belfasttelegraph.co.uk/news/local-national/republic-of-ireland/sinn-fein-wins-by-landslide-in-donegal-southwest-byelection-15015148.html |url-status=dead |archive-date=19 July 2012 |title=Sinn Fein wins by landslide in Donegal South-West by-election |date=27 November 2010|newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=1 January 2011}}</ref> After negotiations with the left-wing Independent TDs [[Finian McGrath]] and [[Maureen O'Sullivan (politician)|Maureen O'Sullivan]], a [[Technical Group]] was formed in the Dáil to give its members more speaking time.<ref>{{cite news |url=http://www.irishtimes.com/newspaper/breaking/2010/1210/breaking53.html |title=SF forms Dail Technical Group |first=Stephen |last=Collins |date=10 December 2010 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |access-date=13 January 2011 |archive-url=https://web.archive.org/web/20110313134618/http://www.irishtimes.com/newspaper/breaking/2010/1210/breaking53.html |archive-date=13 March 2011 |url-status=live}}</ref><ref>{{cite news |url=http://www.rte.ie/news/2010/1126/donegal.html |title=Pearse Doherty elected in Donegal South–West |work=[[RTÉ News]] |location=Dublin |date=26 November 2010 |access-date=13 January 2011 |archive-url=https://web.archive.org/web/20110101092530/http://www.rte.ie/news/2010/1126/donegal.html |archive-date=1 January 2011 |url-status=live}}</ref>

In the [[2011 Irish general election]] the party made significant gains. All its sitting TDs were returned, with Seán Crowe regaining the seat he had lost in 2007 in Dublin South-West. In addition to winning long-targeted seats such as [[Dublin Central (Dáil constituency)|Dublin Central]] and [[Dublin North-West (Dáil constituency)|Dublin North-West]], the party gained unexpected seats in [[Cork East (Dáil constituency)|Cork East]] and [[Sligo–North Leitrim (Dáil constituency)|Sligo–North Leitrim]].<ref name=IT1>{{cite news |url=http://www.irishtimes.com/newspaper/breaking/2011/0227/breaking2.html |title=Fine Gael poised to lead next government as FF collapses |first=Kilian |last=Doyle |date=27 February 2011 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |archive-url=https://web.archive.org/web/20111101114307/http://www.irishtimes.com/newspaper/breaking/2011/0227/breaking2.html |archive-date=1 November 2011 |url-status=live}}</ref> It ultimately won 14 seats, the best performance at the time for the party's current incarnation. The party went on to win three seats in the Seanad election which followed their success at the general election.{{sfn|Gallagher|Marsh|2011|pages=149, 250}} In the [[2016 Irish general election|2016 election]] it made further gains, finishing with 23 seats and overtaking the Labour Party as the third-largest party in the Dáil{{sfn|Gallagher|Marsh|2016|page=135}} It ran seven candidates in the Seanad election, all of whom were successful.{{sfn|Gallagher|Marsh|2016|page=239}}

The party achieved their greatest contemporary result in the [[2020 Irish general election]], topping the first-preference votes with 24.5% and winning 37 seats. Due to poor results in the 2019 local elections and elections to the European Parliament, the party ran only 42 candidates and did not compete in [[Cork North-West (Dáil constituency)|Cork North-West]]. The party achieved unexpected success in the early counting, with 27 candidates being elected on the first count.<ref>{{cite news |url=https://www.rte.ie/news/election-2020/results/ |title=General Election Results |work=[[RTÉ News]] |access-date=15 February 2020 |archive-date=13 February 2020 |archive-url=https://web.archive.org/web/20200213130309/https://www.rte.ie/news/election-2020/results/ |url-status=live}}</ref><ref>{{cite news |url=https://www.bbc.com/news/world-europe-51441410 |title=Fianna Fáil largest party but Sinn Féin celebrate |date=11 February 2020 |work=[[BBC News]] |access-date=15 February 2020 |language=en-GB |archive-date=14 February 2020 |archive-url=https://web.archive.org/web/20200214200429/https://www.bbc.com/news/world-europe-51441410 |url-status=live}}</ref> Party leader Mary Lou McDonald called the result a "revolution" and announced she would pursue the formation of a government including Sinn Féin.<ref>{{cite news |url=https://www.reuters.com/article/us-ireland-election-idUSKBN2030CJ |title=Irish nationalists Sinn Fein demand place in government after strong election showing |date=9 February 2020 |work=[[Reuters]] |access-date=15 February 2020 |language=en |archive-date=15 February 2020 |archive-url=https://web.archive.org/web/20200215020843/https://www.reuters.com/article/us-ireland-election-idUSKBN2030CJ |url-status=live}}</ref> Ultimately negotiations to form a new government led to Fianna Fáil, Fine Gael and the [[Green Party (Ireland)|Green Party]] agreeing to enter a majority [[32nd government of Ireland|coalition government]] in June. Sinn Féin pledged to be a strong opposition to the new coalition.<ref>{{cite news |url=https://www.belfasttelegraph.co.uk/news/republic-of-ireland/sinn-fein-pledges-to-lead-strong-opposition-as-parties-agree-to-enter-coalition-39319632.html |title=Sinn Fein pledges to lead strong opposition as parties agree to enter coalition |first=Aine |last=McMahon |agency=[[Press Association]] |date=26 June 2020 |newspaper=[[Belfast Telegraph]] |issn=0307-5664 |location=Belfast |language=en |access-date=6 July 2020 |archive-date=6 July 2020 |archive-url=https://web.archive.org/web/20200706114137/https://www.belfasttelegraph.co.uk/news/republic-of-ireland/sinn-fein-pledges-to-lead-strong-opposition-as-parties-agree-to-enter-coalition-39319632.html |url-status=live}}</ref>

====Presidential elections====
{| class="wikitable" style="font-size:97%; text-align:center;"
! Election
! Candidate
! 1st pref. <br/>votes
! %
! Position
|-
| [[2011 Irish presidential election|2011]]
| [[Martin McGuinness]]
| 243,030
| 13.7%
| #3
|-
| [[2018 Irish presidential election|2018]]
| [[Liadh Ní Riada]]
| 93,987
| 6.4%
| #4
|-
| align="center" |[[2025 Irish presidential election|2025]]
|Supported [[Catherine Connolly]] as an independent
| 914,143
| 63.4%
| '''#1'''
|}

====Local government elections====
{|class="wikitable sortable" style="text-align:center; font-size:95%"
|-
! Election
! Country
! First pref. <br/>vote
! Vote %
! Seats
|-
| [[1920 Irish local elections|1920]]
| Ireland
| –
| 27.0%
| –
|-
| [[1974 Irish local elections|1974]]
| [[Republic of Ireland]]
| –
| –
| align=left|{{Composition bar|7|802|hex={{party color|Sinn Féin}}}}
|-
| [[1979 Irish local elections|1979]]
| Republic of Ireland
| –
| –
| align=left|{{Composition bar|11|798|hex={{party color|Sinn Féin}}}}
|-
| [[1985 Northern Ireland local elections|1985]]
| [[Northern Ireland]]
| 75,686
| 11.8%
| align=left|{{Composition bar|59|565|hex={{party color|Sinn Féin}}}}
|-
| [[1985 Irish local elections|1985]]
| Republic of Ireland
| 46,391
| 3.3%
| –
|-
| [[1989 Northern Ireland local elections|1989]]
| Northern Ireland
| 69,032
| 11.2%
| align=left|{{Composition bar|43|565|hex={{party color|Sinn Féin}}}}
|-
| [[1991 Irish local elections|1991]]
| Republic of Ireland
| 29,054
| 2.1%
| align=left|{{Composition bar|8|883|hex={{party color|Sinn Féin}}}}
|-
| [[1993 Northern Ireland local elections|1993]]
| Northern Ireland
| 77,600
| 12.0%
| align=left|{{Composition bar|51|582|hex={{party color|Sinn Féin}}}}
|-
| [[1997 Northern Ireland local elections|1997]]
| Northern Ireland
| 106,934
| 17.0%
| align=left|{{Composition bar|74|575|hex={{party color|Sinn Féin}}}}
|-
| [[1999 Irish local elections|1999]]
| Republic of Ireland
| 49,192
| 3.5%
| align=left|{{Composition bar|21|883|hex={{party color|Sinn Féin}}}}
|-
| [[2001 Northern Ireland local elections|2001]]
| Northern Ireland
| 163,269
| 21.0%
| align=left|{{Composition bar|108|582|hex={{party color|Sinn Féin}}}}
|-
| [[2004 Irish local elections|2004]]
| Republic of Ireland
| 146,391
| 8.0%
| align=left|{{Composition bar|54|883|hex={{party color|Sinn Féin}}}}
|-
| [[2005 Northern Ireland local elections|2005]]
| Northern Ireland
| 163,205
| 23.2%
| align=left|{{Composition bar|126|582|hex={{party color|Sinn Féin}}}}
|-
| [[2009 Irish local elections|2009]]
| Republic of Ireland
| 138,405
| 7.4%
| align=left|{{Composition bar|54|883|hex={{party color|Sinn Féin}}}}
|-
| [[2011 Northern Ireland local elections|2011]]
| Northern Ireland
| 163,712
| 24.8%
| align=left|{{Composition bar|138|583|hex={{party color|Sinn Féin}}}}
|-
| [[2014 Northern Ireland local elections|2014]]
| Northern Ireland
| 151,137
| 24.1%
| align=left|{{Composition bar|105|462|hex={{party color|Sinn Féin}}}}
|-
| [[2014 Irish local elections|2014]]
| Republic of Ireland
| 258,650
| 15.2%
| align=left|{{Composition bar|159|949|hex={{party color|Sinn Féin}}}}
|-
| [[2019 Northern Ireland local elections|2019]]
| Northern Ireland
| 157,448
| 23.2%
| align=left|{{Composition bar|105|462|hex={{party color|Sinn Féin}}}}
|-
| [[2019 Irish local elections|2019]]
| Republic of Ireland
| 164,637
| 9.5%
| align=left|{{Composition bar|81|949|hex={{party color|Sinn Féin}}}}
|-
| [[2023 Northern Ireland local elections|2023]]
| Northern Ireland 
| 230,793
| 30.9%
|align=left|{{Composition bar|144|462|hex={{party color|Sinn Féin}}}}
|-
| [[2024 Irish local elections|2024]]
| Republic of Ireland
| 218,620
| 11.8%
| align=left|{{Composition bar|102|949|hex={{party color|Sinn Féin}}}}
|}
Sinn Féin is represented on most county and city councils. It made large gains in the [[2004 Irish local elections|local elections of 2004]], increasing its number of councillors from 21 to 54, and replacing the [[Progressive Democrats]] as the fourth-largest party in local government.<ref name=results2004>{{cite web |url=http://www.electionsireland.org/results/local/seatsummary.cfm?election=2004L |title=2004 Local Election: Seats per Party per Council |first1=Christopher|last1=Took|first2=Seán|last2=Donnelly|work=ElectionsIreland.org |access-date=10 November 2009 |archive-url=https://web.archive.org/web/20090624072527/http://electionsireland.org/results/local/seatsummary.cfm?election=2004L |archive-date=24 June 2009 |url-status=live}}</ref> At the [[2009 Irish local elections|local elections of June 2009]], the party's vote fell by 0.95% to 7.34%, with no change in the number of seats. Losses in Dublin and urban areas were balanced by gains in areas such as Limerick, Wicklow, Cork, Tipperary and Kilkenny and the border counties .<ref name=2009results>{{cite news |title=Elections 2009: How Ireland Voted |newspaper=[[The Irish Times]] |date=9 June 2009}}</ref> However, three of Sinn Féin's seven representatives on [[Dublin City Council]] resigned within six months of the June 2009 elections, one of them defecting to the [[Labour Party (Ireland)|Labour Party]].<ref>{{cite news |title=Defecting councillor says SF has become directionless in South |date=12 January 2010 |newspaper=[[The Irish Times]] |issn=0791-5144 |location=Dublin |language=en-ie |url=http://www.irishtimes.com/newspaper/ireland/2010/0112/1224262117991.html |access-date=15 January 2010 |archive-url=https://web.archive.org/web/20101123110622/http://www.irishtimes.com/newspaper/ireland/2010/0112/1224262117991.html |archive-date=23 November 2010 |url-status=live}} Retrieved 15 January 2010.</ref>

===European Parliament elections===
In the [[2004 European Parliament election]], [[Bairbre de Brún]] won Sinn Féin's first seat in the European Parliament, at the expense of the SDLP. She came in second behind [[Jim Allister]] of the DUP.<ref>{{cite web |url=http://www.ark.ac.uk/elections/fe04.htm |title=The 2004 European Election |access-date=25 July 2015 |archive-url=https://web.archive.org/web/20070404234444/http://www.ark.ac.uk/elections/fe04.htm |archive-date=4 April 2007 |url-status=live}}</ref> In the [[2009 European Parliament election|2009 election]], de Brún was re-elected with 126,184 first preference votes, the only candidate to reach the quota on the first count. This was the first time since elections began in 1979 that the DUP failed to take the first seat, and was the first occasion Sinn Féin topped a poll in any Northern Ireland election.<ref>{{cite news |url=https://news.bbc.co.uk/2/hi/uk_news/northern_ireland/8089501.stm |title=Sinn Fein tops poll in Euro count |work=BBC News |date=8 June 2009 |access-date=20 April 2010 |archive-url=https://web.archive.org/web/20140518085201/http://news.bbc.co.uk/1/hi/northern_ireland/8089501.stm |archive-date=18 May 2014 |url-status=live}}</ref><ref>{{cite web |url=http://www.sinnfein.ie/contents/16580 |title=History made – Sinn Féin is now the largest party in the Six Counties |publisher=Sinnfein.ie |access-date=20 April 2010 |url-status=dead |archive-url=https://web.archive.org/web/20100113123331/http://www.sinnfein.ie/contents/16580 |archive-date=13 January 2010}}</ref>

Sinn Féin made a breakthrough in the [[Dublin (European Parliament constituency)|Dublin constituency]] in [[2004 European Parliament election in Ireland|2004]]. The party's candidate, [[Mary Lou McDonald]], was elected on the sixth count as one of four MEPs for Dublin.<ref>{{cite web |url=http://www.electionsireland.org/result.cfm?election=2004E&cons=524 |title=European Election: June 2004 – Dublin |publisher=Electionsireland.org |access-date=1 January 2011 |archive-url=https://web.archive.org/web/20090505203347/http://electionsireland.org/result.cfm?election=2004E&cons=524 |archive-date=5 May 2009 |url-status=live}}</ref> In the [[2009 European Parliament election in Ireland|2009 election]], when Dublin's representation was reduced to three MEPs, she failed to hold her seat.<ref name="Election Ireland results">{{cite web |url=http://www.electionsireland.org/result.cfm?election=2009E&cons=242 |title=2009 Euro – South First Preference Votes |publisher=ElectionsIreland.org |access-date=14 July 2011 |archive-url=https://web.archive.org/web/20110809203457/http://electionsireland.org/result.cfm?election=2009E&cons=242 |archive-date=9 August 2011 |url-status=live}}</ref> In the South constituency their candidate, Councillor [[Toiréasa Ferris]], managed to nearly double the number of first preference votes,<ref name="Election Ireland results" /> lying third after the first count, but failed to get enough transfers to win a seat. In the [[2014 European Parliament election|2014 election]], [[Martina Anderson]] topped the poll in [[Northern Ireland (European Parliament constituency)|Northern Ireland]], as did [[Lynn Boylan]] in [[Dublin (European Parliament constituency)|Dublin]]. [[Liadh Ní Riada]] was elected in the [[South (European Parliament constituency)|South]] constituency, and [[Matt Carthy]] in [[Midlands–North-West (European Parliament constituency)|Midlands–North-West]].<ref>{{cite news |url=http://www.rte.ie/news/2014/0527/619845-local-european-elections/ |title=Full recheck in Midlands-North-West constituency |date=28 May 2014 |work=[[RTÉ News]] |archive-url=https://web.archive.org/web/20140527214250/http://www.rte.ie/news/2014/0527/619845-local-european-elections/ |archive-date=27 May 2014 |url-status=live}}</ref> In the [[2019 European Parliament election|2019 election]], Carthy was re-elected, but Boylan and Ní Riada lost their seats. Anderson also held her Northern Ireland seat until early 2020 when her term was cut short by [[Brexit]].<ref>{{cite news |url=https://www.rte.ie/news/elections-2019/results/#/european/ |title=2019 European election results for Ireland |date=June 2019 |work=[[RTÉ News]] |archive-url=https://web.archive.org/web/20190609112915/https://www.rte.ie/news/elections-2019/results/#/european/ |archive-date=9 June 2019 |url-status=live}}</ref>

====Republic of Ireland====
{|class="wikitable" style=text-align:center; font-size:97%;"
! Election
! Leader
! 1st pref. <br />votes
! %
! Seats
! +/−
! EP group
|-
! [[1984 European Parliament election in Ireland|1984]]
| rowspan=7 | [[Gerry Adams]]
| 54,672
| 4.88 (#4)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| New
| rowspan="4" |−
|-
! [[1989 European Parliament election in Ireland|1989]]
| 35,923
| 2.20 (#8)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1994 European Parliament election in Ireland|1994]]
| 33,823
| 2.97 (#7)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1999 European Parliament election in Ireland|1999]]
| 88,165
| 6.33 (#5)
| {{Composition bar|0|15|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2004 European Parliament election in Ireland|2004]]
| 197,715
| 11.10 (#3)
| {{Composition bar|1|13|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| rowspan="3" |[[European United Left/Nordic Green Left|GUE/NGL]]
|-
! [[2009 European Parliament election in Ireland|2009]]
| 205,613
| 11.24 (#5)
| {{Composition bar|0|12|hex={{party color|Sinn Féin}}}}
| {{decrease}} 1
|-
! [[2014 European Parliament election in Ireland|2014]]
| 323,300
| 19.52 (#3)
| {{Composition bar|3|11|hex={{party color|Sinn Féin}}}}
| {{increase}} 3
|-
! [[2019 European Parliament election in Ireland|2019]]
| rowspan="2" |[[Mary Lou McDonald]]
| 196,001
| 11.68 (#3)
| {{Composition bar|1|13|hex={{party color|Sinn Féin}}}}
| {{decrease}} 2
| rowspan="2" |[[The Left in the European Parliament - GUE/NGL|The Left]]
|-
! [[2024 European Parliament election in Ireland|2024]]
| 194,403
| 11.14 (#3)
| {{Composition bar|2|14|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
|}

====Northern Ireland====
{|class="wikitable" style=text-align:center; font-size:97%;"
! Election
! Leader
! 1st pref. <br />votes
! %
! Seats
! +/−
! EP group
|-
! [[1984 European Parliament election in the United Kingdom#Northern Ireland|1984]]
| rowspan="2" | [[Danny Morrison (Irish republican)|Danny Morrison]]
| 91,476
| 13.35 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| New
| rowspan="4" |−
|-
! [[1989 European Parliament election in the United Kingdom#Northern Ireland|1989]]
| 48,914
| 9.15 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1994 European Parliament election in the United Kingdom#Northern Ireland|1994]]
| [[Tom Hartley (politician)|Tom Hartley]]
| 55,215
| 9.86 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[1999 European Parliament election in the United Kingdom#Northern Ireland|1999]]
| [[Mitchel McLaughlin]]
| 117,643
| 17.33 (#4)
| {{Composition bar|0|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2004 European Parliament election in the United Kingdom#Northern Ireland|2004]]
| rowspan="2" | [[Bairbre de Brún]]
| 144,541
| 26.31 (#2)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{increase}} 1
| rowspan="3" |[[European United Left/Nordic Green Left|GUE/NGL]]
|-
! [[2009 European Parliament election in the United Kingdom#Northern Ireland|2009]]
| 126,184
| 25.81 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2014 European Parliament election in the United Kingdom|2014]]
| rowspan="2" | [[Martina Anderson]]
| 159,813
| 25.52 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
|-
! [[2019 European Parliament election in the United Kingdom|2019]]
| 126,951
| 22.17 (#1)
| {{Composition bar|1|3|hex={{party color|Sinn Féin}}}}
| {{steady}}
| [[The Left in the European Parliament - GUE/NGL|The Left]]
|-
|}

== See also ==
* [[Friends of Sinn Féin]] (an international organisation designed to support Sinn Féin's cause, with members in Great Britain, the United States, Canada, and Australia)
* [[List of current Sinn Féin elected representatives]]
* [[List of political parties in Northern Ireland]]
* [[List of political parties in the Republic of Ireland]]
* [[List of Sinn Féin MPs]] (for members elected to the British Parliament)

==Notes==
{{notelist}}

== Citations ==
{{reflist}}

== General and cited sources ==
{{refbegin|30em}}
* {{cite book |first=Gerry |last=Adams |author-link=Gerry Adams |title=Before the Dawn |publisher=Brandon Book |date=1996 |isbn=978-0-434-00341-9}}
* {{cite book |first=Kevin |last=Bean |title=The New Politics of Sinn Fein |url=https://books.google.com/books?id=g7AgCwAAQBAJ&pg=PA171 |date=15 February 2008 |publisher=Oxford University Press |isbn=978-1-78138-780-1 |access-date=29 January 2016 |archive-date=29 May 2016 |archive-url=https://web.archive.org/web/20160529150846/https://books.google.com/books?id=g7AgCwAAQBAJ&pg=PA171 |url-status=live }}
* {{cite book |last1=Bourne |first1=Angela K. |title=Democratic Dilemmas: Why democracies ban political parties |date=26 July 2018|publisher=[[Routledge]] |isbn=9781138898011}}
* {{cite book |title=Joe Cahill: A Life in the IRA |first=Brendan |last=Anderson |year=2002 |publisher=[[O'Brien Press]] |location=Dublin |isbn=978-0-86278-674-8}}
* {{cite book |title=The Secret Army: The IRA |first=J Bowyer |last=Bell |author-link=J Bowyer Bell |publisher=[[Poolbeg Press]] |place=Dublin |date=1997 |edition=3rd |isbn=978-1-85371-813-7}}
* {{cite book |title=Northern Ireland: A Chronology of the Troubles 1968–1993 |first1=Paul |last1=Bew |author-link=Paul Bew |first2=Gordon |last2=Gillespie |publisher=[[Gill & Macmillan]] |place=Dublin |date=1993 |isbn=978-0-7171-2081-9}}
* {{cite book |title=The I.R.A. |first=Tim Pat |last=Coogan |author-link=Tim Pat Coogan |publisher=[[HarperCollins]] |place=London |date=2000 |isbn=978-0-00-653155-5}}
* {{cite book |first1=Eileen |last1=Culloty |first2=Jane |last2=Suiter |author-link2=Jane Suiter |chapter=Journalism Norms and the Absence of Media Populism in the Irish General Election 2016 |editor=Susana Salgado |title=Mediated Campaigns and Populism in Europe |chapter-url=https://books.google.com/books?id=xRF-DwAAQBAJ&pg=PA54 |year=2018 |publisher=Springer |isbn=978-3-319-98563-3 |access-date=22 April 2020 |archive-date=8 July 2020 |archive-url=https://web.archive.org/web/20200708055912/https://books.google.com/books?id=xRF-DwAAQBAJ&pg=PA54 |url-status=live }}
* {{cite book |title=Eyewitness to Irish History |first=Peter Berresford |last=Ellis |author-link=Peter Berresford Ellis |publisher=John Wiley & Sons, Inc |place=Canada |date=2004 |isbn=978-0-471-26633-4}}
* {{cite book |title=Sinn Féin: A Hundred Turbulent Years |first=Brian |last=Feeney |publisher=[[O'Brien Press]] |place=Dublin |date=2002 |isbn=978-1-85371-813-7}}
* {{cite book |title=The Transformation of Ireland 1900–2000 |first=Diarmaid |last=Ferriter |author-link=Diarmaid Ferriter |publisher=[[Profile Books]] |place=London |date=2005 |isbn=978-1-86197-443-3}}
* {{cite book |chapter=Provisional Sinn Féin |first1=W.D. |last1=Flackes |author1-link=W. D. Flackes |first2=Sydney |last2=Elliott |date=1994 |title=Northern Ireland: A Political Directory 1968–1993 |place=Belfast |publisher=[[Blackstaff Press]] |isbn=9780717139927}}
* {{cite book |last=Frampton |first=Martyn |title=The Long March: The Political Strategy of Sinn Féin, 1981–2007 |publisher=[[Palgrave Macmillan]] |year=2009 |isbn=978-0-230-20217-7}}
* {{cite book |first=Michael |last=Gallagher |author-link=Michael Gallagher (academic) |title=Political Parties in the Republic of Ireland |url=https://archive.org/details/politicalparties0000gall |url-access=registration |year=1985 |publisher=[[Manchester University Press]] |isbn=978-0-7190-1797-1 }}
* {{cite book |last1=Gallagher |first1=Michael |author1-link=Michael Gallagher (academic) |last2=Marsh |first2=Michael |title=How Ireland Voted 2011: The Full Story of Ireland's Earthquake Election |publisher=Springer |date=18 October 2011 |isbn=978-0-230-35400-5 |url=https://books.google.com/books?id=FbiADAAAQBAJ |access-date=4 March 2017 |archive-url=https://web.archive.org/web/20170305095027/https://books.google.com/books?id=FbiADAAAQBAJ&printsec=frontcover |archive-date=5 March 2017 |url-status=live }}
* {{cite book |last1=Gallagher |first1=Michael |author1-link=Michael Gallagher (academic) |last2=Marsh |first2=Michael |title=How Ireland Voted 2016: The Election that Nobody Won |date=27 October 2016 |publisher=Springer |isbn=978-3-319-40889-7 |url=https://books.google.com/books?id=DKVlDQAAQBAJ&pg=PA135 |access-date=4 March 2017 |archive-url=https://web.archive.org/web/20170305110638/https://books.google.com/books?id=DKVlDQAAQBAJ&pg=PA135 |archive-date=5 March 2017 |url-status=live }}
* {{cite book |first=Arthur |last=Griffith |author-link=Arthur Griffith |title=The Resurrection of Hungary: A Parallel for Ireland |date=1904 |place=Dublin |publisher=James Duffy & Co., M.H. Gill & Son, Sealy, Bryers & Walker}} ({{Internet Archive|id=TheResurrectionOfHungary|name=1st edition}}, {{Internet Archive|id=resurrectionofhu00grifiala|name=3rd edition}})
* {{cite book |title=The Lost Revolution: The Story of the Official IRA and the Workers' Party |first1=Brian |last1=Hanley |first2=Scott |last2=Millar |place=Dublin |publisher=Penguin Ireland |date=2009 |isbn=978-1-84488-120-8}}
* {{cite book |title=Ireland: A History |first=Robert |last=Kee |author-link=Robert Kee |publisher=[[Little, Brown Book Group|Abacus]] |place=London |edition=Revised |date=2005 |isbn=978-0-349-11676-1}}
* {{cite book |title=The Resurrection of Ireland: The Sinn Féin Party 1916–1923 |first=Michael |last=Laffan |place=Cambridge |date=1999 |publisher=[[Cambridge University Press]] |isbn=978-0521650731}}
* {{cite book |editor-first=Mícheál |editor-last=Mac Donncha  |editor-link=Mícheál Mac Donncha |year=2005 |title=Sinn Féin: A Century of Struggle |publisher=Republican Books |location=Dublin |language=Irish, en |isbn=978-0-9542946-2-5}}
* {{Cite book |last=Mac Stíofáin |first=Seán |author-link=Seán Mac Stíofáin |title=Revolutionary in Ireland |publisher=Gordon Cremonesi |year=1975 |place=London |isbn=0-86033-031-1}}
* {{cite book |last=Maillot |first=Agnès |title=New Sinn Féin: Irish republicanism in the twenty-first century |publisher=[[Routledge]] |year=2005 |isbn=0-415-32197-2}}
* {{cite book |title=Sinn Féin and the SDLP: From Alienation to Participation |last1=Murray |first1=Gerard |last2=Tonge |first2=Jonathan  |author2-link=Jonathan Tonge |year=2005 |publisher=[[O'Brien Press]] |location=Dublin |isbn=978-0-86278-918-3 |page=153}}
* {{cite book |first=Brendan |last=O'Brien |author-link=Brendan O'Brien (journalist) |title=The Long War: The IRA and Sinn Féin, Second Edition |url=https://archive.org/details/longwarirasinnfe00obri |url-access=registration |date=1 August 1995 |publisher=[[Syracuse University Press]] |isbn=978-0-8156-0597-3 }}
* {{cite book |last=O'Brien |first=Brendan |author-link=Brendan O'Brien (journalist) |date=2019 |title=A Short History of the IRA: From 1916 Onwards |url=https://books.google.com/books?id=_Pt7DwAAQBAJ&dq=history+of+sinn+f%C3%A9in+paddy+mclogan&pg=PT59 |location= |publisher= The O'Brien Press|page= |isbn=9781788491167 |access-date=4 January 2022 |archive-date=5 January 2022 |archive-url=https://web.archive.org/web/20220105210310/https://books.google.com/books?id=_Pt7DwAAQBAJ&dq=history+of+sinn+f%C3%A9in+paddy+mclogan&pg=PT59 |url-status=live }}
* {{cite book |title=Ireland Since 1939 |first=Henry |last=Patterson |publisher=Penguin Ireland |place=Dublin |date=2006}}
* {{cite book |first=Kevin |last=Rafter |author-link=Kevin Rafter |title=Sinn Féin, 1905–2005: In the Shadow of Gunmen |place=Dublin |publisher=[[Gill & Macmillan]] |date=2005 |isbn=9780717139927}}
* {{cite book |last=Taylor |first=Peter |author-link=Peter Taylor (journalist) |title=Provos The IRA & Sinn Féin |publisher=[[Bloomsbury Publishing]] |year=1997 |isbn=978-0-7475-3818-9}}
* {{cite book |last=Sanders |first=Andrew |date=2011 |title=Inside the IRA: Dissident Republicans and the War for Legitimacy |url=https://books.google.com/books?id=PcdvAAAAQBAJ&q=sinn+f%C3%A9in&pg=PT16 |publisher=[[Edinburgh University Press]] |isbn=978-0748641123 |access-date=4 January 2022 |archive-date=4 January 2022 |archive-url=https://web.archive.org/web/20220104172948/https://books.google.com/books?id=PcdvAAAAQBAJ&q=sinn+f%C3%A9in&pg=PT16 |url-status=live }}
* {{cite book|title=Irish voters decide: voting behaviour in elections and referendums since 1918 |first=Richard |last=Sinnott |publisher=[[Manchester University Press]]|date=1995 |isbn=978-0-7190-4037-5}}
* {{cite book |authorlink=Jane Suiter |first=Jane |last=Suiter |chapter=Ireland: The Rise of Populism on the Left and among Independents |editor1=Toril Aalberg |editor2=Frank Esser |editor3=Carsten Reinemann |editor4=Jesper Stromback |editor5=Claes De Vreese |title=Populist Political Communication in Europe |chapter-url=https://books.google.com/books?id=ozaTDAAAQBAJ |year=2016 |publisher=[[Routledge]] |isbn=978-1-317-22474-7 |access-date=21 April 2020 |archive-date=9 May 2022 |archive-url=https://web.archive.org/web/20220509172048/https://books.google.com/books?id=ozaTDAAAQBAJ |url-status=live }}
* {{cite book |first=Robert W. |last=White |title=Ruairí Ó Brádaigh, the Life and Politics of an Irish Revolutionary |publisher=[[Indiana University Press]] |date=2006 |isbn=978-0-253-34708-4}}
* {{cite book |last=White |first=Robert |title=Out of the Ashes: An Oral History of the Provisional Irish Republican Movement |publisher=[[Merrion Press]] |year=2017 |isbn=978-1-78537-093-9}}
{{refend}}

==Further reading==
{{refbegin|30em}}
* {{cite book |first=Tim Pat |last=Coogan |author-link=Tim Pat Coogan |title=The Troubles |publisher=Arrow |date=1995–1996 |isbn=978-0-09-946571-3}}
* {{cite book |first=Tim Pat |last=Coogan |author-link=Tim Pat Coogan |title=Michael Collins |publisher=Hutchinson |date=1990 |isbn=978-0-09-174106-8}}
* {{cite book |first=Roy |last=Foster |author-link=R. F. Foster (historian) |title=Ireland 1660–1972 |publisher=Allen Lane |date=27 October 1988 |isbn=978-0713990102}}
* {{cite book |first=Robert |last=Kee |author-link=Robert Kee |title=The Green Flag: A History of Irish Nationalism |publisher=Penguin |date=1972–2000 |isbn=978-0-14-029165-0}}
* {{cite book |first=Geraldine |last=Kennedy |author-link=Geraldine Kennedy |title=Nealon's Guide to the 29th Dáil and Seanad |publisher=Gill and Macmillan |date=2002 |isbn=978-0-7171-3288-1}}.
* {{cite book |first=F. S. L. |last=Lyons |author-link=F. S. L. Lyons |title=Ireland Since the Famine |place=London |publisher=Weidenfeld and Nicolson |date=1971 |isbn=0297002236}}
* {{cite book |first=Brian |last=Maye |author-link= |title=Arthur Griffith |publisher=Griffith College Publications}}
* {{cite book |first=Dorothy |last=Macardle |author-link=Dorothy Macardle |title=The Irish Republic |publisher=Corgi |date=1968 |isbn=978-0-552-07862-7}}
* {{cite book |first=Sean |last=O'Callaghan |author-link=Sean O'Callaghan |title=The Informer |publisher=Corgi |date=1999 |isbn=978-0-552-14607-4}}
* [[P. S. O'Hegarty|O'Hegarty, Patrick Sarsfield]] (introduction by [[Tom Garvin]]), ''The Victory of Sinn Féin: How It Won It & How It Used It'' (1999) {{ISBN|978-1-900621-17-5}}
* {{cite book |first=Peter |last=Taylor |author-link=Peter Taylor (Journalist) |title=Behind the Mask: The IRA & Sinn Féin |year=1999 |publisher=TV Books |isbn=978-1-57500-077-0}}
{{refend}}

==External links==
{{Commons category|Sinn Féin}}
* {{Official website}}
* {{usurped|1=[https://web.archive.org/web/20120315035816/https://sfguengl.com/ Sinn Féin delegation to the GUE/NGL group in the European Parliament in Brussels website]}}
* [https://www.theguardian.com/politics/sinn-fein Sinn Féin category] in ''[[The Guardian]]''
* [https://www.leftarchive.ie/organisation/244/ Sinn Féin documents] at the [https://www.leftarchive.ie/ Irish Left Archive]
* Sinn Féin documents at the Irish Republican Digital Archive: [https://republicanarchive.com/2024/09/28/provisional-sinn-fein-1970-1986/ 1970-1986] and [https://republicanarchive.com/2024/10/27/provisional-sinn-fein-nov-1986-2005/ 1986-2005]

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