View source for Illinois Senate

{{Short description|Upper chamber of the Illinois General Assembly}}
{{Use mdy dates|date=December 2011}}
{{Infobox legislature
| background_color = {{party color|Democratic Party (US)}}
| name          = Illinois Senate
| legislature   = [[Illinois General Assembly]]
| coa_pic       = Seal_of_Illinois.svg
| coa_res       =
| session_room  = Illinois State Senate.jpg
| house_type    = Upper house
| term_limits   = None
| new_session   = January 11, 2023
| leader1_type  = [[President of the Illinois Senate|President]]
| leader1       = [[Don Harmon]] ([[Democratic Party (United States)|D]])
| election1     = January 19, 2020
| leader2_type  = President pro tempore
| leader2       = [[William Cunningham (Illinois politician)|Bill Cunningham]] ([[Democratic Party (United States)|D]])
| election2     = January 30, 2020
| leader3_type  = Majority Leader
| leader3       = [[Kimberly Lightford]] ([[Democratic Party (United States)|D]])
| election3     = January 7, 2019
| leader4_type  = Minority Leader
| leader4       = [[John Curran (Illinois politician)|John Curran]] ([[Republican Party (United States)|R]])
| election4     = January 11, 2023
| members       = 59
| term_length   = 4 years (with one two-year term each decade)
| authority     = [[Illinois Constitution]] Article IV
| salary        = $85,000/year + [[per diem]]
| structure1    = {{switcher |[[File:Illinois State Senate partisan composition.svg|250px]] |Seat display|[[File:IL Senate August 2025.svg|250px]] |Map display|default=1}}
| political_groups1 =
'''Majority'''
*{{legend|#0000FF|[[Illinois Democratic Party|Democratic]] (40)}}
'''Minority'''
*{{legend|#F8050D|[[Illinois Republican Party|Republican]] (19)}}
<!--'''Vacant'''-->
<!--*{{legend|#808080|Vacant (1)}}-->
| last_election1 = [[2024 Illinois Senate election|November 5, 2024]]
| next_election1 = [[2026 Illinois Senate election|November 3, 2026]]
| redistricting  = Legislative Control
| meeting_place = State Senate Chamber<br/>[[Illinois State Capitol]]<br/>[[Springfield, IL|Springfield]], Illinois
| website       = {{Official URL}}
|rules=[https://www.ilga.gov/senate/103rd_Senate_Rules.pdf Rules of the Senate of the<br/>103rd General Assembly]}}
The '''Illinois Senate''' is the [[Upper house|upper chamber]] of the [[Illinois General Assembly]], the [[legislative branch]] of the government of the [[U.S. state|State]] of [[Illinois]] in the [[United States]].  The body was created by the first state constitution adopted in 1818.  Under the [[Constitution of Illinois|Illinois Constitution]] of 1970, the Illinois Senate is made up of 59 [[State senator|senators]] elected from individual legislative districts determined by population and redistricted every 10 years; based on the 2020 [[U.S. census]] each senator represents approximately 213,347 people.<ref>State Populations from U.S Census 2020 ''[https://www.census.gov/programs-surveys/popest/technical-documentation/research/evaluation-estimates/2020-evaluation-estimates/2010s-state-detail.html U.S Census Website]''</ref>  Senate districts are divided into three groups, each group having a two-year term at a different part of the decade between censuses, with the rest of the decade being taken up by two four-year terms. For example, group one elects senators for terms of four years, four years and two years, group two elects senators for terms of four years, two years and four years, and group three elects senators for terms of two years, four years and four years.<ref>Illinois Constitution Article IV, Section 2(a) http://www.ilga.gov/commission/lrb/con4.htm</ref> This ensures that the Senate reflects changes made when the General Assembly redistricts itself after each census.

Usually, depending on the election year, roughly one-third or two-thirds of Senate seats are contested. On rare occasions (usually after a census), all Senate seats are up for election. In contrast, the [[Illinois House of Representatives]] is made up of 118 members with its entire membership elected to two-year terms. House districts are formed by dividing each Senate district in half,<ref>Illinois Constitution Article IV, Section 2(b) http://www.ilga.gov/commission/lrb/con4.htm</ref> with each senator having two "[[nesting (voting districts)|associated]]" representatives.

The Illinois Senate convenes at the [[Illinois State Capitol]] in [[Springfield, Illinois]]. Its first official working day is the second Wednesday of January each year. Its primary duties are to pass bills into law, approve the state budget, confirm appointments to state departments and agencies, act on federal constitutional amendments and propose constitutional amendments for Illinois. It also has the power to override gubernatorial vetoes through a three-fifths majority vote. The Illinois Senate tries impeachments made by the House of Representatives, and can convict impeached officers by a two-thirds vote.

Voting in the Illinois Senate is done by members pushing one of three buttons.  Unlike most states, the Illinois Senate allows members to vote yes, no, or present. It takes 30 affirmative votes to pass legislation during final action.  The number of negative votes does not matter.  Therefore, voting present has the same effect on the tally as voting no.  [[Barack Obama]] began his political career in the Illinois Senate before going on to become President of the United States.<ref>{{cite web|last1=Gonzales|first1=Nathan|title=The Ever-'Present' Obama|url=http://www.realclearpolitics.com/articles/2007/02/the_everpresent_obama.html|website=The Rothenberg Political Report|access-date=26 September 2014|date=13 February 2007}}</ref><ref>{{cite news|last1=Burnett|first1=Sara|title=Illinois Senate votes to legalize gay marriage|url=http://bigstory.ap.org/article/illinois-senate-votes-legalize-gay-marriage|access-date=26 September 2014|agency=Associated Press|date=14 February 2013|archive-date=April 16, 2014|archive-url=https://web.archive.org/web/20140416192721/http://bigstory.ap.org/article/illinois-senate-votes-legalize-gay-marriage|url-status=dead}}</ref>

==Party summary==
{|class=wikitable style="text-align:center;
|- style="vertical-align:bottom;"
!rowspan=3|Affiliation
!colspan=2|Party <div style="font-size:80%">(Shading indicates majority caucus)</div>
!rowspan=3|Total
!
|- style="height:5px"
| style="background-color:{{party color|Democratic Party (United States)}}" |
| style="background-color:{{party color|Republican Party (United States)}}" |
| style="background:black;"|
|-
! [[Illinois Democratic Party|Democratic]]
! [[Illinois Republican Party|Republican]]
! Vacant
|-
! {{nowrap|{{small|End of previous legislature}}}}
| {{party shading/Democratic}}| 41
| 18
! 59
| 0
|-
| colspan="6" |
|-
! {{small|January 13, 2023}}
| {{party shading/Democratic}}| 40
| 19
! 59
| 0
|-
! {{small|May 31, 2023}}<ref>{{cite web |title=Senator Pacione-Zayas readies to resign to officially work in Mayor Johnson's inner circle |url=https://nadignewspapers.com/senator-pacione-zayas-readies-to-resign-to-officially-work-in-mayor-johnsons-inner-circle/ |website=Nadig Newspapers|access-date=July 7, 2023}}</ref>
| {{party shading/Democratic}}| 39
| 19
! 58
| 1
|-
! {{small|July 10, 2023}}<ref>{{cite web |title=Dems appoint Natalie Toro to fill state Senate seat vacated by Cristina Pacione-Zayas |url=https://www.chicagobusiness.com/politics/natalie-toro-appointed-state-senate-seat|website=Crain's Chicago Business|access-date=July 12, 2023}}</ref>
| {{party shading/Democratic}}| 40
| 19
! 59
| 0
|-
! {{small|August 1, 2023}}<ref>{{Cite web |date=2023-07-26 |title=Illinois State Sen. Patricia Van Pelt announces retirement |url=https://www.chicagotribune.com/politics/ct-senator-van-pelt-retires-20230727-nlxmsju7bnf5bgifa2woshv6oe-story.html |access-date=2023-08-17 |website=Chicago Tribune}}</ref>
| {{party shading/Democratic}}| 39
| 19
! 58
| 1
|-
! {{small|August 16, 2023}}<ref>{{Cite web |last=Kapos |first=Shia |date=2023-08-16 |title=Dems' thrill of victory, agony of defeat |url=https://www.politico.com/newsletters/illinois-playbook/2023/08/16/dems-thrill-of-victory-agony-of-defeat-00111423 |access-date=2023-08-17 |website=POLITICO |language=en}}</ref>
| {{party shading/Democratic}}| 40
| 19
! 59
| 0
|-
! Latest voting share
! {{party shading/Democratic}}|{{percentage|40|59|1}}
! {{percentage|19|59|1}}
! colspan=2|
|}

==Leadership==
{{As of|2021|Feb|6|df=US}}, the 102nd General Assembly of the Illinois Senate consists of the following leadership:<ref>{{Cite web|url=https://www.ilga.gov/senate/102nd_Senate_Leadership.pdf|title=102ND GA SENATE LEADERSHIP|access-date=2021-02-06|website=[[Illinois General Assembly]]}}</ref>

===Majority===
*[[President of the Illinois Senate|President of the Senate]]: [[Don Harmon]]
*Majority Leader: [[Kimberly A. Lightford]]
*Assistant Majority Leader/President Pro Tempore: [[William Cunningham (Illinois politician)|Bill Cunningham]]
*Deputy Majority Leaders:
**[[Laura Murphy]]
**[[Emil Jones III]]
*Assistant Majority Leaders:
**[[Jacqueline Y. Collins]]
**[[Linda Holmes]]
**[[Dave Koehler]]
**[[Napoleon Harris]]
*Majority Caucus Chair: [[ Omar Aquino]]
*Majority Caucus Whips:
**[[Cristina Castro (politician)]]
**[[Robert Peters (Illinois politician)]]
**[[Ram Villivalam]]
**[[Julie Morrison]]

===Minority===
*Minority Leader: [[John Curran (Illinois politician)|John Curran]]
*Deputy Minority Leader: [[Sue Rezin]]
*Assistant Minority Leaders:
**[[ Mattie Hunter]]
**[[David Koehler]]
**[[Linda Holmes]]
**[[Laura M. Murphy]]
**[[Napoleon Harris III]]
*Minority Caucus Chair: [[Neil Anderson (Illinois politician)|Neil Anderson]]
*Minority Caucus Whips:
**[[Sally Turner]]
**[[Jil Tracy]]

==Officers==
*Secretary of the Senate: Tim Anderson
*Assistant Secretary of the Senate: Scott Kaiser
*Sergeant-at-Arms: Joe Dominguez
*Assistant Sergeant-at-Arms: Dirk R. Eilers

==Members==
In 1924, [[Florence Fifer Bohrer]] became the body's first female member and [[Adelbert H. Roberts]] became its first [[African American]] member.<ref>{{cite journal|last=Thomas|first=Whitney Freund|title=Florence Fifer Bohrer: A Woman Before Her Time|journal=Illinois History: A Magazine for Young People|volume=51|issue=3|pages=59–60|date=April 1998|url=http://www.lib.niu.edu/1998/ihy980459.html|access-date=August 22, 2017|archive-url=https://web.archive.org/web/20160304002313/http://www.lib.niu.edu/1998/ihy980459.html|archive-date=March 4, 2016|url-status=dead}}</ref><ref name="Statue">{{cite magazine|editor-last=Gherardini|editor-first=Caroline|title=Honors|magazine=Illinois Issues|publisher=[[Sangamon State University]]|location=[[Springfield, Illinois]]|date=February 1984|volume=9|issue=2|page=41|issn=0738-9663|access-date=August 21, 2017|url=http://www.lib.niu.edu/1984/ii8402039.html}}</ref> In 1977, [[Earlean Collins]] became the first African American woman to serve in the Illinois Senate.<ref name="ILRU 2016">{{cite web|last1=Musser|first1=Ashley|last2=Dutton|first2=Julie|title=Illinois Women in Congress and General Assembly|date=February 11, 2016|publisher=[[Illinois General Assembly|Illinois Legislative Research Unit]]|location=[[Springfield, Illinois]]|access-date=August 21, 2017|url=http://ilga.gov/commission/lru/FemaleLegislators.pdf}}</ref> [[Barack Obama]], later the first African-American President of the United States, served in the Illinois Senate from 1997 to 2004.<ref>{{cite web|editor-last=Miller|editor-first=David R.|title=A Former New Member: Barack Obama (D-13, Chicago) (From First Reading, December 1996)|page=4|work=First Reading|publisher=[[Illinois General Assembly|Illinois Legislative Research Unit]]|location=[[Springfield, Illinois]]|volume=22|issue=2|url=http://www.ilga.gov/commission/lru/Nov2008FirstRdg.pdf}}</ref>

{{As of|2025|February|14|df=US}}, the 104th General Assembly of the Illinois Senate consists of the following members:<ref name="First Reading 12-22">{{cite journal|editor-last=Barlow|editor-first=Sarah E.|title=Biographies of New House Members|journal=First Reading|volume=36|number=1|page=2|publisher=[[Illinois General Assembly]]|access-date=December 4, 2022|url=https://www.ilga.gov/commission/lru/FirstReadingNov2022.pdf}}</ref><ref name="Bennett Senate Appointment">{{cite news|last=Barichello|first=Derek|title=Tom Bennett Named Barickman Successor|date=January 7, 2023|access-date=January 7, 2023|newspaper=Shaw Local|url=https://www.shawlocal.com/mywebtimes/2023/01/07/tom-bennett-named-jason-barickmans-successor-in-illinois-senate/|url-access=subscription}}</ref>
{| class="wikitable sortable"
! District !! Senator !! Party !! Residence !! Assumed<br>office !! Next<br />election
|-
| 1
| {{sortname|Javier|Cervantes}} ƗƗ
| {{Party shading/Democratic}} | Democratic
| rowspan="8" | [[Chicago, Illinois|Chicago]]
| November 18, 2022
| 2028
|-
| 2
| {{sortname|Omar|Aquino}} Ɨ
| {{Party shading/Democratic}} | Democratic
| July 1, 2016
| rowspan="2" | 2026
|-
| 3
| {{sortname|Mattie|Hunter}}
| {{Party shading/Democratic}} | Democratic
| January 8, 2003
|-
| 4
| {{sortname|Kimberly A.|Lightford}} Ɨ
| {{Party shading/Democratic}} | Democratic
| November 20, 1998
| 2028
|-
| 5
| {{sortname|Lakesia|Collins}} Ɨ
| {{Party shading/Democratic}} | Democratic
| August 16, 2023
| rowspan="2" | 2026
|-
| 6
| {{sortname|Sara|Feigenholtz}} Ɨ
| {{Party shading/Democratic}} | Democratic
| January 21, 2020
|-
| 7
| {{sortname|Mike|Simmons}} Ɨ
| {{Party shading/Democratic}} | Democratic
| February 6, 2021
| 2028
|-
| 8
| {{sortname|Ram|Villivalam}} ƗƗ
| {{Party shading/Democratic}} | Democratic
| January 5, 2019
| rowspan="2" | 2026
|-
| 9
|{{sortname|Laura|Fine}} ƗƗ
| {{Party shading/Democratic}} | Democratic
|[[Glenview, Illinois|Glenview]]
| January 6, 2019
|-
| 10
| {{sortname|Robert|Martwick}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Chicago, Illinois|Chicago]]
| June 28, 2019
| 2028
|-
| 11
| {{sortname|Mike|Porfirio}}
| {{Party shading/Democratic}} | Democratic
| [[Bridgeview, Illinois|Bridgeview]]
| January 11, 2023
| rowspan="2" | 2026
|-
| 12
| {{sortname|Celina|Villanueva}} Ɨ
| {{Party shading/Democratic}} | Democratic
| rowspan="3" | [[Chicago, Illinois|Chicago]]
| January 7, 2020
|-
| 13
| {{sortname|Robert|Peters|Robert Peters (Illinois politician)}} Ɨ
| {{Party shading/Democratic}} | Democratic
| January 6, 2019
| 2028
|-
| 14
| {{sortname|Emil|Jones III}}
| {{Party shading/Democratic}} | Democratic
| January 14, 2009
| rowspan="2" | 2026
|-
| 15
| {{sortname|Napoleon|Harris}}
| {{Party shading/Democratic}} | Democratic
| [[Harvey, Illinois|Harvey]]
| January 9, 2013
|-
| 16
| {{sortname|Willie|Preston}}
| {{Party shading/Democratic}} | Democratic
| rowspan="3" | [[Chicago, Illinois|Chicago]]
| January 11, 2023
| 2028
|-
| 17
| {{sortname|Elgie|Sims}} Ɨ
| {{Party shading/Democratic}} | Democratic
| January 26, 2018
| rowspan="2" | 2026
|-
| 18
| {{sortname|William|Cunningham|William Cunningham (Illinois politician)}}
| {{Party shading/Democratic}} | Democratic
| rowspan="2" | January 9, 2013
|-
| 19
| {{sortname|Michael|Hastings|Michael Hastings (politician)}}
| {{Party shading/Democratic}} | Democratic
| [[Tinley Park, Illinois|Tinley Park]]
| 2028
|-
| 20
| {{sort name|Graciela|Guzmán}}
| {{Party shading/Democratic}} | Democratic
| [[Chicago, Illinois|Chicago]]
| January 8, 2025
| rowspan="2" | 2026
|-
| 21
| {{sortname|Laura|Ellman}}
| {{Party shading/Democratic}} | Democratic
| [[Lisle, Illinois|Lisle]] 
| January 9, 2019
|-
| 22
| {{sortname|Cristina|Castro|Cristina Castro (politician)}}
| {{Party shading/Democratic}} | Democratic
| [[Elgin, Illinois|Elgin]]
| January 11, 2017
| 2028
|-
| 23
| {{sortname|Suzy|Glowiak}}
| {{Party shading/Democratic}} | Democratic
| [[Western Springs, Illinois|Western Springs]]
| January 9, 2019
| rowspan="2" | 2026
|-
| 24
| {{sortname|Seth|Lewis}}
| {{Party shading/Republican}} | Republican
| [[Bartlett, Illinois|Bartlett]]
| January 11, 2023
|-
| 25
| {{sortname|Karina|Villa}}
| {{Party shading/Democratic}} | Democratic
| [[West Chicago, Illinois|West Chicago]]
| January 13, 2021
| 2028
|-
| [[Illinois's 26th Senate district|26]]
| {{sortname|Darby|Hills}} Ɨ
| {{Party shading/Republican}} | Republican
| [[Barrington Hills, Illinois|Barrington Hills]]
| February 14, 2025
| rowspan="2" | 2026
|-
| 27
| {{sortname|Mark L.|Walker}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Arlington Heights, Illinois|Arlington Heights]]
| May 11, 2024
|-
| 28
| {{sortname|Laura|Murphy}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Des Plaines, Illinois|Des Plaines]]
| October 5, 2015
| 2028
|-
| 29
| {{sortname|Julie|Morrison}}
| {{Party shading/Democratic}} | Democratic
| [[Deerfield, Illinois|Deerfield]]
| January 9, 2013
| rowspan="2" | 2026
|-
| 30
| {{sortname|Adriane|Johnson}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Buffalo Grove, Illinois|Buffalo Grove]]
| October 11, 2020
|-
| 31
| {{sortname|Mary|Edly-Allen}}
| {{Party shading/Democratic}} | Democratic
| [[Libertyville, Illinois|Libertyville]]
| January 11, 2023
| 2028
|-
| 32
| {{sortname|Craig|Wilcox}} Ɨ
| {{Party shading/Republican}} | Republican
| [[McHenry, Illinois|McHenry]]
| October 1, 2018
| rowspan="2" | 2026
|-
| 33
| {{sortname|Don|DeWitte}}
| {{Party shading/Republican}} | Republican
| [[St. Charles, Illinois|St. Charles]]
| January 9, 2019
|-
| 34
| {{sortname|Steve|Stadelman}}
| {{Party shading/Democratic}} | Democratic
| [[Rockford, Illinois|Rockford]]
| January 9, 2013
| 2028
|-
| 35
| {{sortname|Dave|Syverson}}
| {{Party shading/Republican}} | Republican
| [[Rockford, Illinois|Rockford]]
| January 13, 1993
| rowspan="2" | 2026
|-
| 36
| {{sortname|Michael|Halpin}}
| {{Party shading/Democratic}} | Democratic
| [[Rock Island, Illinois|Rock Island]]
| January 11, 2023
|-
| 37
| {{sortname|Li|Arellano Jr}}
| {{Party shading/Republican}} | Republican
| [[Dixon, Illinois|Dixon]]
| January 8, 2025
| 2028
|-
| 38
| {{sortname|Sue|Rezin}} Ɨ
| {{Party shading/Republican}} | Republican
| [[Morris, Illinois|Morris]]
| December 11, 2010
| rowspan="2" | 2026
|-
| 39
| {{sortname|Don|Harmon}}
| {{Party shading/Democratic}} | Democratic
| [[Oak Park, Illinois|Oak Park]]
| January 8, 2003
|-
| 40
| {{sortname|Patrick|Joyce|Patrick Joyce (politician)}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Kankakee, Illinois|Kankakee]]
| November 8, 2019
| 2028
|-
| 41
| {{sortname|John|Curran|John Curran (Illinois politician)}} Ɨ
| {{Party shading/Republican}} | Republican
| [[Woodridge, Illinois|Woodridge]]
| July 23, 2017
| rowspan="2" | 2026
|-
| 42
| {{sortname|Linda|Holmes}}
| {{Party shading/Democratic}} | Democratic
| [[Aurora, Illinois|Aurora]]
| January 10, 2007
|-
| 43
| {{sortname|Rachel|Ventura}}
| {{Party shading/Democratic}} | Democratic
| [[Joliet, Illinois|Joliet]]
| January 11, 2023
| 2028
|-
| 44
| {{sortname|Sally|Turner|Sally Turner (politician)}} Ɨ
| {{Party shading/Republican}} | Republican
| [[Beason, Illinois|Beason]]
| January 25, 2021
| rowspan="2" | 2026
|-
| 45
| {{sortname|Andrew|Chesney}} ƗƗ
| {{Party shading/Republican}} | Republican
|[[Freeport, Illinois|Freeport]]
| December 5, 2018
|-
| 46
| {{sortname|Dave|Koehler}} ƗƗ
| {{Party shading/Democratic}} | Democratic
| [[Peoria, Illinois|Peoria]]
| December 3, 2006
| 2028
|-
| 47
| {{sortname|Neil|Anderson|Neil Anderson (Illinois politician)}}
| {{Party shading/Republican}} | Republican
| [[Andalusia, Illinois|Andalusia]]
| January 15, 2015
| rowspan="2" | 2026
|-
| 48
| {{sortname|Doris|Turner|Doris Turner (politician)}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Springfield, Illinois|Springfield]]
| February 6, 2021
|-
| 49
| {{sortname|Meg|Loughran Cappel}} ƗƗ
| {{Party shading/Democratic}} | Democratic
| [[Shorewood, Illinois|Shorewood]]
| December 10, 2020
| 2028
|-
| 50
| {{sortname|Jil|Tracy}}
| {{Party shading/Republican}} | Republican
| [[Quincy, Illinois|Quincy]]
| January 11, 2017
| rowspan="2" | 2026
|-
| 51
| {{sortname|Chapin|Rose}}
| {{Party shading/Republican}} | Republican
| [[Mahomet, Illinois|Mahomet]]
| January 9, 2013
|-
| 52
| {{sortname|Paul|Faraci}} Ɨ
| {{Party shading/Democratic}} | Democratic
| [[Champaign, Illinois|Champaign]]
| January 11, 2023
| 2028
|-
| 53
| {{sortname|Chris|Balkema}}
| {{Party shading/Republican}} | Republican
| [[Channahon, Illinois|Channahon]]
| January 8, 2025
| rowspan="2" | 2026
|-
| 54
| {{sortname|Steve|McClure|Steve McClure (politician)}}
| {{Party shading/Republican}} | Republican 
| [[Springfield, Illinois|Springfield]]
| rowspan="2" | January 9, 2019
|-
| 55
| {{sortname|Jason|Plummer|Jason Plummer (politician)}}
| {{Party shading/Republican}} | Republican
| [[Edwardsville, Illinois|Edwardsville]]
| 2028
|-	
| 56
| {{sortname|Erica| Harriss}}
| {{Party shading/Republican}} | Republican
| [[Glen Carbon, Illinois|Glen Carbon]]
| January 11, 2023
| rowspan="2" | 2026
|-
| 57
| {{sortname|Christopher|Belt}}
| {{Party shading/Democratic}} | Democratic
| [[Cahokia Heights, Illinois|Cahokia Heights]]
| January 9, 2019
|-
| 58
| {{sortname|Terri|Bryant}}
| {{Party shading/Republican}} | Republican
| [[Murphysboro, Illinois|Murphysboro]]
| January 13, 2021
| 2028
|-
| 59
| {{sortname|Dale|Fowler}}
| {{Party shading/Republican}} | Republican
| [[Harrisburg, Illinois|Harrisburg]]
| January 11, 2017
| 2026
|-
|}
* Ɨ Legislator was appointed to the Illinois Senate prior to initial election.
* ƗƗ Legislator was appointed to the Illinois Senate after being elected, but prior to inauguration day of the General Assembly to which they were elected.

== Past composition of the Senate ==
{{main|Political party strength in Illinois}}

== Future election terms by district ==
{{Unreferenced section|date=January 2025}}
State senators will be elected in the legislative districts for terms of office as set forth below.

'''First group''' (Districts 2, 5, 8, 11, 14, 17, 20, 23, 26, 29, 32, 35, 38, 41, 44, 47, 50, 53, 56, 59)

2026 -4 Years 

2030 - 2 Years

'''Second group''' (Districts 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57)

2026 - 2 Years 

2028 - 4 Years

'''Third group''' (Districts 1, 4, 7, 10, 13, 16, 19, 22, 25, 28, 31, 34, 37, 40, 43, 46, 49, 52, 55, 58)

2028-4 Years

== Notes ==
<references group="lower-alpha" />

==References==
{{reflist|30em}}

==External links==
*[http://www.ilga.gov/senate/ Illinois General Assembly – Senate] {{Webarchive|url=https://web.archive.org/web/20120918171655/http://www.ilga.gov/senate/ |date=September 18, 2012 }} ''official government website''
*[https://web.archive.org/web/20070223094711/http://www.senategop.state.il.us/ Illinois Senate Republicans] ''official party website''
*[http://www.illinoissenatedemocrats.com/ Illinois Senate Democrats] ''official party website''
*[http://votesmart.org/officials/IL/L/  Legislature of Illinois] at [[Project Vote Smart]]
*{{Ballotpedia|Illinois_State_Senate}}

{{Illinois Senate}}
{{United States legislatures}}

{{Authority control}}

[[Category:Illinois General Assembly|Senate]]
[[Category:State upper houses in the United States]]
[[Category:1818 establishments in Illinois]]