Illinois state legislative districts
 |
List of state legislative districts |
There are 177 seats in the Illinois General Assembly. All 118 seats in the Illinois House of Representatives are up for election every two years. Depending on the election year, roughly ⅓, ⅔, or all of the 59 senate seats may be up for election.
Chambers
Click the following tabs for more information about each chamber:
Senate
The Illinois State Senate is the upper chamber of the Illinois General Assembly. It is made up of 59 senators elected from individual legislative districts determined by population.
As of the 2020 Census, Illinois state senators represented an average of 217,335 residents. After the 2010 Census, each member represented 218,040 residents.
Qualifications
Article IV of the Illinois Constitution states: "To be eligible to serve as a member of the General Assembly, a person must be a United States citizen, at least 21 years old, and for the two years preceding his election or appointment a resident of the district which he is to represent."[1]
Vacancies
If there is a vacancy in the Illinois General Assembly, the state constitution mandates that the seat must be filled by appointment when allowed by law. The appointment must be made within 30 days after the vacancy. If a vacancy occurs in the Senate with more than twenty-eight months remaining in the term, the appointment is interim until the next general election, when a special election must be held. All other House and Senate vacancies are to be filled by an appointment from the same political party that last held the seat.[2] If the vacated seat was held by an independent (no party affiliation), the governor is to appoint an independent successor within 30 days.[3]
The vacancy must be filled by the respective party organizations covering the legislative district.[4] The respective committeemen and committeewomen representing the legislative district must vote on a replacement.[5] The person selected for the seat serves for the remainder of the unfilled term.[6]
See sources: Illinois Const. Art. 4, Sec. 2(d) and Illinois Rev. Stat. ch. 10, § 5/25-6
Salaries
- See also: Comparison of state legislative salaries
| State legislative salaries, 2024[7] | |
|---|---|
| Salary | Per diem |
| $89,250/year | $166/day |
Districts
These are links to every district in the Illinois State Senate.
House
The Illinois House of Representatives is the lower house of the Illinois General Assembly. It is made of 118 representatives elected from individual legislative districts for a two-year term with no term limits.
As of the 2020 Census, Illinois state representatives represented an average of 108,667 residents. After the 2010 Census, each member represented 109,020 residents.
Qualifications
Article IV of the Illinois Constitution states: "To be eligible to serve as a member of the General Assembly, a person must be a United States citizen, at least 21 years old, and for the two years preceding his election or appointment a resident of the district which he is to represent."[8]
Vacancies
If there is a vacancy in the Illinois General Assembly, the state constitution mandates that the seat must be filled by appointment when allowed by law. The appointment must be made within 30 days after the vacancy. If a vacancy occurs in the Senate with more than twenty-eight months remaining in the term, the appointment is interim until the next general election, when a special election must be held. All other House and Senate vacancies are to be filled by an appointment from the same political party that last held the seat.[9] If the vacated seat was held by an independent (no party affiliation), the governor is to appoint an independent successor within 30 days.[10]
The vacancy must be filled by the respective party organizations covering the legislative district.[11] The respective committeemen and committeewomen representing the legislative district must vote on a replacement.[12] The person selected for the seat serves for the remainder of the unfilled term.[13]
See sources: Illinois Const. Art. 4, Sec. 2(d) and Illinois Rev. Stat. ch. 10, § 5/25-6
Salaries
- See also: Comparison of state legislative salaries
| State legislative salaries, 2024[14] | |
|---|---|
| Salary | Per diem |
| $89,250/year | $166/day |
Districts
These are links to every district in the Illinois House of Representatives.
Redistricting
The Illinois General Assembly is responsible for drawing both congressional and state legislative district lines. Both chambers of the state legislature must approve a redistricting plan. The governor may veto the lines drawn by the state legislature.[15]
In the event that both chambers of the state legislature do not approve a legislative redistricting plan, a backup commission must draw the lines. The majority and minority leaders of each chamber must appoint two members each to the commission (one legislator and one general citizen). Of the eight commission members, no more than four may belong to the same political party. In the event that these eight members cannot approve a plan, the Illinois Supreme Court must select two individuals (from different political parties) as potential tiebreakers. The secretary of state must then appoint one of these individuals to the backup commission to break the tie.[15]
The Illinois Constitution requires that state legislative districts be "contiguous and reasonably compact." There are no such requirements in place for the state's congressional districts.[15]
State law also mandates the establishment of state legislative districts "that allow racial or language minority communities to elect--or influence the election of--the candidates of their choice, even if no comparable district would be required by the federal Voting Rights Act."[15]
The Illinois State Legislature approved new state legislative maps in a special session on August 31, 2021. Gov. J.B. Pritzker (D) signed the new maps into law on September 24, 2021.[16] These maps were revised versions of maps enacted on June 4, 2021, that the legislature based on non-census population estimates. Following the release of census data in August, the legislature reconvened to develop and approve a revised map. These maps were later subject to a federal lawsuit that was decided on December 30, 2021, with the court upholding the maps enacted on September 24, 2021.[17] Illinois House minority leader Tony McCombie (R) and five voters filed a lawsuit on January 28, 2025, alleging that the state House map enacted in 2021 was drawn unconstitutionally in Democrats' favor. [18] Learn more here.
Senate elections
Under the Illinois Constitution of 1970, senators 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. Depending on the election year, roughly ⅓, ⅔, or all of the senate seats may have terms ending.[19] Illinois holds elections for its legislature in even years.
2026
- See also: Illinois State Senate elections, 2026
Elections for the Illinois State Senate will take place in 2026. The general election is on November 3, 2026.
2024
- See also: Illinois State Senate elections, 2024
Elections for the Illinois State Senate took place in 2024. The general election was on November 5, 2024. The primary was March 19, 2024. The filing deadline was December 4, 2023.
In the 2024 election, the partisan breakdown did not change. Democrats maintained their majority of 40-19.
| Illinois State Senate | |||
|---|---|---|---|
| Party | As of November 5, 2024 | After November 6, 2024 | |
| Democratic Party | 40 | 40 | |
| Republican Party | 19 | 18 | |
| Vacancy | 0 | 1 | |
| Total | 59 | 59 | |
2022
- See also: Illinois State Senate elections, 2022
Elections for the Illinois State Senate took place in 2022. The general election was on November 8, 2022. A primary was scheduled for June 28, 2022. The filing deadline was March 14, 2022.
In the 2022 elections, Democrats lost one net seat, decreasing their majority to 40-19. On December 9, 2022, former State Sen. Scott Bennett, who won his former seat, died due to complications of a brain tumor. In January 2023, State Sen. Jason Barickman resigned. These vacancies are not reflected on the chart below.
| Illinois State Senate | |||
|---|---|---|---|
| Party | As of November 8, 2022 | After November 9, 2022 | |
| Democratic Party | 41 | 40 | |
| Republican Party | 18 | 19 | |
| Total | 59 | 59 | |
2020
- See also: Illinois State Senate elections, 2020
Elections for the office of Illinois State Senate took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for March 17, 2020. The filing deadline was December 2, 2019.
In the 2020 elections, Democrats increased their majority in the Illinois State Senate from 40–19 to 41–18.
| Illinois State Senate | |||
|---|---|---|---|
| Party | As of November 3, 2020 | After November 4, 2020 | |
| Democratic Party | 40 | 41 | |
| Republican Party | 19 | 18 | |
| Total | 59 | 59 | |
2018
- See also: Illinois State Senate elections, 2018
Elections for the Illinois State Senate took place in 2018. An open primary election took place on March 20, 2018. The general election was held on November 6, 2018. The candidate filing deadline was December 4, 2017.[20]
In the 2018 elections, Democrats increased their majority in the Illinois State Senate from 37-22 to 40-19.
| Illinois State Senate | |||
|---|---|---|---|
| Party | As of November 6, 2018 | After November 7, 2018 | |
| Democratic Party | 37 | 40 | |
| Republican Party | 22 | 19 | |
| Total | 59 | 59 | |
2016
- See also: Illinois State Senate elections, 2016
Elections for the Illinois State Senate were held in 2016. The primary election was held on March 15, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was November 30, 2015.[21] A total of 40 seats out of the 59 seats in the Illinois State Senate were up for election in 2016.
Heading into the election, Democrats held a 39-20 majority. Democrats lost two seats in the election, giving them a 37-22 majority.
| Illinois State Senate | |||
|---|---|---|---|
| Party | As of November 7, 2016 | After November 8, 2016 | |
| Democratic Party | 39 | 37 | |
| Republican Party | 20 | 22 | |
| Total | 59 | 59 | |
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2014
Elections for the Illinois State Senate took place in 2014. A primary election took place on March 18, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was December 2, 2013. A total of 19 seats out of the chamber's 59 seats were up for election in 2014. Heading into the election, Democrats held a 40-19 majority. Democrats lost one seat in the election, giving them a 39-20 majority.
2012
Elections for the office of Illinois State Senate took place in 2012. The primary election was held on March 20, 2012, and the general election was held on November 6, 2012. The candidate filing deadline was December 5, 2011. All 59 seats were up for election, as the election was the first following redistricting. Heading into the election, Democrats held a 35-24 majority. Democrats gained five seats in the election, giving them a 40-19 majority.
The table below details the 10 districts with the smallest margin of victory in the November 6 general election in 2012.
2010
Elections for the office of Illinois State Senate took place in 2010. The primary election was held on February 2, 2010, and the general election was held on November 2, 2010. The candidate filing deadline was November 2, 2009. Heading into the election, Democrats held a 37-22 majority. Democrats lost two seats in the election, giving them a 35-23 majority with one vacancy.
2008
Elections for the office of Illinois State Senate consisted of a primary election on February 5, 2008, and a general election on November 4, 2008. During the 2008 election, the total value of contributions to Senate candidates was $30,470,315. The top 10 contributors were:[23]
2006
Elections for the office of Illinois State Senate consisted of a primary election on March 21, 2006, and a general election on November 7, 2006. During the 2006 election, the total value of contributions to Senate candidates was $33,836,264. The top 10 contributors were:[24]
2004
Elections for the office of Illinois State Senate consisted of a primary election on March 16, 2004, and a general election on November 2, 2004. During the 2004 election, the total value of contributions to Senate candidates was $27,180,039. The top 10 contributors were:[25]
2002
Elections for the office of Illinois State Senate consisted of a primary election on March 19, 2002, and a general election on November 5, 2002. During the 2002 election, the total value of contributions to Senate candidates was $35,390,771. The top 10 contributors were:[26]
2000
Elections for the office of Illinois State Senate consisted of a primary election on March 21, 2000, and a general election on November 7, 2000. During the 2000 election, the total value of contributions to Senate candidates was $21,381,359. The top 10 contributors were:[27]
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House elections
Illinois state representatives serve two-year terms, with all seats up for election every two years. Illinois holds elections for its legislature in even years.
2026
Elections for the Illinois House of Representatives will take place in 2026. The general election is on November 3, 2026.
2024
Elections for the Illinois House of Representatives took place in 2024. The general election was on November 5, 2024. The primary was March 19, 2024. The filing deadline was December 4, 2023.
In the 2024 election, the partisan breakdown did not change. Democrats maintained their majority of 78-40.
| Illinois House of Representatives | |||
|---|---|---|---|
| Party | As of November 5, 2024 | After November 6, 2024 | |
| Democratic Party | 78 | 78 | |
| Republican Party | 40 | 40 | |
| Total | 118 | 118 | |
2022
Elections for the Illinois House of Representatives took place in 2022. The general election was on November 8, 2022. A primary was scheduled for June 28, 2022. The filing deadline was March 14, 2022.
In the 2022 elections, the Democratic majority in the Illinois House of Representatives increased from 74–44 to 78–39 with one vacancy.[28]
| Illinois House of Representatives | |||
|---|---|---|---|
| Party | As of November 8, 2022 | After November 9, 2022 | |
| Democratic Party | 73 | 78 | |
| Republican Party | 45 | 39 | |
| Vacancies | 0 | 1 | |
| Total | 118 | 118 | |
2020
Elections for the office of Illinois House of Representatives took place in 2020. The general election was held on November 3, 2020. A primary was scheduled for March 17, 2020. The filing deadline was December 2, 2019.
In the 2020 elections, the Democratic majority in the Illinois House of Representatives decreased from 74–44 to 73–45.
| Illinois House of Representatives | |||
|---|---|---|---|
| Party | As of November 3, 2020 | After November 4, 2020 | |
| Democratic Party | 74 | 73 | |
| Republican Party | 44 | 45 | |
| Total | 118 | 118 | |
Selection of speaker
On January 13, 2021, Emanuel Welch (D) was elected speaker of the Illinois House of Representatives. Welch replaced former House Speaker Michael Madigan (D), the longest-serving statehouse speaker in American history and chairman of the Illinois Democratic Party. To read more about the events leading up to Welch's election, click here.
2018
Elections for the Illinois House of Representatives took place in 2018. An open primary election took place on March 20, 2018. The general election was held on November 6, 2018. The candidate filing deadline was December 4, 2017.[29]
In the 2018 elections, Democrats increased their majority in the Illinois House of Representatives from 67-51 to 74-44.
| Illinois House of Representatives | |||
|---|---|---|---|
| Party | As of November 6, 2018 | After November 7, 2018 | |
| Democratic Party | 67 | 74 | |
| Republican Party | 51 | 44 | |
| Total | 118 | 118 | |
2016
Elections for the Illinois House of Representatives were held in 2016. The primary election was held on March 15, 2016, and the general election was held on November 8, 2016. The candidate filing deadline was November 30, 2015.[30] All 118 seats in the Illinois House of Representatives were up for election in 2016.
Heading into the election, Democrats held a 71-47 majority. Democrats lost four seats in the election, giving them a 67-51 majority.
| Illinois House of Representatives | |||
|---|---|---|---|
| Party | As of November 7, 2016 | After November 8, 2016 | |
| Democratic Party | 71 | 67 | |
| Republican Party | 47 | 51 | |
| Total | 118 | 118 | |
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2014Elections for the Illinois House of Representatives took place in 2014. A primary election took place on March 18, 2014. The general election was held on November 4, 2014. The signature filing deadline for candidates wishing to run in this election was December 2, 2013. All 118 House seats were up for election in 2014. Heading into the election, Democrats held a 70-47 majority with one vacancy. Democrats gained one seat in the election, giving them a 71-47 majority.
2012Elections for the office of Illinois House of Representatives took place in 2012. The primary election was held on March 20, 2012, and the general election was held on November 6, 2012. The candidate filing deadline was December 5, 2011. All 118 House seats were up for election in 2012. Heading into the election, Democrats held a 64-54 majority. Democrats gained seven seats in the election, giving them a 71-47 majority.
2010Elections for the office of Illinois House of Representatives took place in 2010. The primary election was held on February 2, 2010, and the general election was held on November 2, 2010. The candidate filing deadline was November 2, 2009. All 118 House seats were up for election in 2010. Heading into the election, Democrats held a 70-48 majority. Democrats lost six seats in the election, giving them a 64-54 majority.
2008Elections for the office of Illinois House of Representatives consisted of a primary election on February 5, 2008, and a general election on November 4, 2008. During the 2008 election, the total value of contributions to House candidates was $42,866,912. The top 10 contributors were:[32]
2006Elections for the office of Illinois House of Representatives consisted of a primary election on March 21, 2006, and a general election on November 7, 2006. During the 2006 election, the total value of contributions to House candidates was $38,897,487. The top 10 contributors were:[33]
2004Elections for the office of Illinois House of Representatives consisted of a primary election on March 16, 2004, and a general election on November 2, 2004. During the 2004 election, the total value of contributions to House candidates was $36,703,698. The top 10 contributors were:[34]
2002Elections for the office of Illinois House of Representatives consisted of a primary election on March 19, 2002, and a general election on November 5, 2002. During the 2002 election, the total value of contributions to House candidates was $35,823,142. The top 10 contributors were:[35]
2000Elections for the office of Illinois House of Representatives consisted of a primary election on March 21, 2000, and a general election on November 7, 2000. During the 2000 election, the total value of contributions to House candidates was $35,659,714. The top 10 contributors were:[36]
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District maps
State Senate
State House
See also
- State legislature
- Illinois General Assembly
- Illinois State Senate
- Illinois House of Representatives
- List of Illinois state legislative elections
Footnotes
- ↑ Illinois General Assembly, "Constitution of the State of Illinois," accessed February 10, 2023
- ↑ Illinois General Assembly, "Illinois Constitution," accessed February 4, 2021 (Section Article IV, Section 2(d))
- ↑ Illinois General Assembly, "Illinois Compiled Statutes," accessed February 4, 2021 (Statute 10 ILCS 5/25-6)
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (a), (c))
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (d))
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (f))
- ↑ National Conference of State Legislatures, "2024 Legislator Compensation," August 21, 2024
- ↑ Illinois General Assembly, "Constitution of the State of Illinois," accessed February 10, 2023
- ↑ Illinois General Assembly, "Illinois Constitution," accessed February 4, 2021 (Section Article IV, Section 2(d))
- ↑ Illinois General Assembly, "Illinois Compiled Statutes," accessed February 4, 2021 (Statute 10 ILCS 5/25-6)
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (a), (c))
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (d))
- ↑ Illinois General Assembly, "Illinois Election Code," accessed February 4, 2021 (Statute 10 ILCS 5/25 6 (f))
- ↑ National Conference of State Legislatures, "2024 Legislator Compensation," August 21, 2024
- ↑ 15.0 15.1 15.2 15.3 All About Redistricting, "Illinois," accessed April 16, 2015
- ↑ Cite error: Invalid
<ref>tag; no text was provided for refs namedseptmapexplain - ↑ Longview News-Journal, "Court upholds Illinois legislative redistricting plan," Jan. 4, 2021
- ↑ Democracy Docket, "Illinois Republicans Sue Over Legislative Map, Claiming it Favors Democrats," January 29, 2025
- ↑ Illinois General Assembly, "Policies and Procedures," accessed February 4, 2021
- ↑ Illinois State Board of Elections, "Election and campaign finance calendar 2018," accessed August 16, 2017
- ↑ Illinois State Board of Elections, "Election and Campaign Finance Calendar," accessed November 30, 2015
- ↑ Follow the Money, "Illinois Senate 2010 Campaign Contributions," accessed May 26, 2015
- ↑ Follow the Money, "Illinois 2008 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2006 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2004 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2002 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2000 Candidates," accessed July 18, 2013
- ↑ Representatives Tim Butler (R) and Jim Durkin (R) resigned prior to the 2023 legislative session. Mike Coffey was appointed to fill Butler's seat before the 2023 session.
- ↑ Illinois State Board of Elections, "Election and campaign finance calendar 2018," accessed August 16, 2017
- ↑ Illinois State Board of Elections, "Election and Campaign Finance Calendar," accessed November 30, 2015
- ↑ Follow the Money, "Illinois House 2010 Campaign Contributions," accessed July 6, 2011
- ↑ Follow the Money, "Illinois 2008 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2006 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2004 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2002 Candidates," accessed July 18, 2013
- ↑ Follow the Money, "Illinois 2000 Candidates," accessed July 18, 2013
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