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|Senate Leader||Dan McConchie|
|House Leader||Jim Durkin|
|National affiliation||Republican Party|
|Seats in the Senate|
18 / 59
|Seats in the House|
45 / 118
0 / 6
|US Senate (Illinois Seats)|
0 / 2
|US House (Illinois Seats)|
5 / 18
The Illinois Republican Party is the affiliate of the Republican Party in the U.S. state of Illinois. Don Tracy has been the chair since 2021. Its opponent, the Democratic Party of Illinois, is the state's dominant party.
The Illinois Republican Party was organized at the Bloomington Convention in Major's Hall in Bloomington on May 29, 1856. Its founding members came from the former Whig Party in Illinois after its members joined with several powerful local political factions including, notably, the Independent Democrat movement of Chicago that helped elect James Hutchinson Woodworth Mayor in 1848.
The early Illinois Republican Party enjoyed many members from commerce who shared the vision of Illinois generally, and Chicago in particular, as a gateway to the Western frontier of the United States. The early party members quickly identified their shared anti-slavery sentiment which further differentiated them from the older parties based on the East Coast. Many early members of the party failed to gain statewide office or election to the United States Congress due to this anti-slavery view, although this early position of the party in Illinois would later propel several candidates to prominent office, including the Governorship of Illinois won by Richard Yates, and in the mid-1850s, the election of former Chicago Mayor James Hutchinson Woodworth to one term in the United States House of Representatives.
On May 9–10, 1860 the Illinois Republican State Convention was held in Decatur. At this convention Abraham Lincoln received his first endorsement for president of the United States. Until 1932, Republicans had virtually complete control over Illinois politics.
From 1932 to 1994, Republicans still usually had more control over Illinois politics, although Democrats still had a presence in the state and many noted Democratic politicians, most notably Adlai Stevenson II (lost to Republican Dwight Eisenhower twice), came from Illinois. President Ronald Reagan also came from Illinois, despite living in and serving two terms as Governor of California. The last time Republican carried in presidential elections was 1988, when George H. W. Bush won Illinois by 2.1% marginal points.
By the late 1990s, though, Illinois had started to become more Democratic in presidential elections, partly because the Republican's social conservatism in other states had started to alienated many Northeastern and some Midwestern Republican voters. Illinois rapidly became more Democratic in the second half of the 1990s and early 2000s. In contrast, most GOP candidates in Illinois gubernatorial and U.S. Senate races in recent years have been almost indistinguishable from Democrats on both social and fiscal issues, with the notable exception of Peter Fitzgerald who won the Senate race in 1998. While this tendency has helped Illinois GOP candidates in the suburbs, it has alienated many conservative voters downstate.
Other than a brief majority from 1995-1997 as a result of the Republican Revolution, the Republicans have been in the minority in the state House of Representatives since 1982. In 2002, while the Republicans did well in 2002 midterm elections nationwide, the Illinois Republicans lost their majority when a Democrat became Illinois governor for the first time in 26 years and Democrats gained control of the Illinois Senate, putting the party in the minority for the first time in state history.
The 2010 elections saw the election of Illinois Republican Mark Kirk to the US Senate as well as a Republican sweep of Illinois US House seats. Republicans came within 5 seats of a majority in the Illinois House of Representatives and gained seats in the Senate. Republican nominee Bill Brady narrowly lost the gubernatorial election to Pat Quinn, leaving Democrats in full control of the redistricting process. This resulted in gerrymandering heavily in favor of Democrats. As a result of the redistricting process, Illinois Republicans suffered huge losses in the 2012 elections.
In the 2014 gubernatorial election, Republican nominee Bruce Rauner defeated incumbent Governor Pat Quinn to become the first GOP Governor since George Ryan left office in 2003. Republicans also picked up two Illinois congressional seats and a seat in the Illinois Senate.
Organization and leadership
The Illinois Republican Party is run by the Illinois Republican State Central Committee, which consists of 18 members, one representing each of the state's congressional districts.
Past chairmen (partial list)
|Rebecca Paul||co-chairman ~1985 with Adams|
|Victor L. Smith||1960–1973|
|Donald "Doc" Adams||1973–1988|
|Harold Byron Smith||1993–1999|
|Richard S. Williamson||1999–2002|
|Lee A. Daniels||2001–2002|
|Dallas Ingemunson||2002 (interim)|
|Judy Baar Topinka||2002–2005|
Current elected officials
After the 2018 elections, Republicans hold a minority of 5 of the state's 18 U.S. House seats and none of the statewide offices. The Republicans are also the minority in both chambers of the state legislature.
Members of Congress
Both of Illinois's U.S. Senate seats have held by Democrats since 2016. Mark Kirk was the last Republican to represent Illinois in the U.S. Senate. First elected in 2010, Kirk lost his bid for a second term in the 2016 election to Tammy Duckworth.
U.S. House of Representatives
Out of the 18 seats Illinois is apportioned in the U.S. House of Representatives, 5 are held by Republicans:
In 2018, Republican Governor Bruce Rauner and Lieutenant Governor Evelyn Sanguinetti lost their bid for a second term to Democrats J. B. Pritzker and Juliana Stratton. No Illinois Republican has been elected to the office of Comptroller since 2010, the office of Attorney General since 1998, the office of Secretary of State since 1994, or the office of State Treasurer since 2010.
Some of the state's major cities have Republican mayors. As of 2019, Republicans control the mayor's offices in five of Illinois's ten largest cities:
- Aurora (2): Richard Irvin
- Joliet (4): Bob O'Dekirk
- Naperville (5): Steve Chirico
- Peoria (7): Jim Ardis
- Champaign (10): Deborah Frank Feinen
- Chicago Sun-Times. Does Anyone Want GOP Leadership? June 23, 1993
- St. Louis Post-Dispatch. Jourdan Picked to Head State GOP Party. January 10, 1988.
- Chicago Sun-Times. GOP Taps Suburb Businessman (Smith) as State Chairman. July 7, 1993.
- Pantagraph - Bloomington, Illinois. Williamson Appointed As State's Top Republican. April 16, 1999
- Chicago Sun-Times. Daniels set to lead state GOP. Dave McKinney. November 14, 2001.
- Crain's Chicago Business. GOP selects interim chief.(Ingemunson following Daniels). July 15, 2002.
- The Southern Illinoisan. Conservative welfare reformer named head of state GOP. July 27, 2002.
- St. Louis Post-Dispatch. Topinka is Tapped to Lead Illinois Republican Party. November 27, 2002
- St. Louis Post-Dispatch. Businessman will lead Illinois GOP. January 16, 2005