The Illinois Republican Party is the affiliate of the Republican Party in the U.S. state of Illinois founded on May 29, 1856. It is run by the Illinois Republican State Central Committee, which consists of 17 members, one representing each of the state's congressional districts. Once the dominant party in Illinois, the state GOP has become a minority party within the last few decades, holding little power in the state. The current chairman is Kathy Salvi, who has served since 2024.
The 2010 Illinois gubernatorial election took place on November 2, 2010. Incumbent Democratic Governor Pat Quinn was elected to a full term in office, having become governor in 2009 following the impeachment and removal of Governor Rod Blagojevich. Quinn was elected as the Democratic nominee, the Illinois Green Party nominee was attorney and 2006 nominee Rich Whitney, the Republican nominee was State Senator Bill Brady, the Libertarian Party nominee was Lex Green, and Scott Lee Cohen ran as an independent.
The 1994 Illinois gubernatorial election was held on November 8, 1994. Incumbent Republican Governor Jim Edgar won reelection in the largest landslide in over a century, after the elections of 1818 and 1848.
The 1998 Illinois gubernatorial election took place on November 3, 1998. Incumbent Republican Governor Jim Edgar did not run for a third term in office. Republican nominee George Ryan, the Illinois Secretary of State, narrowly won the election against Democratic Congressman Glenn Poshard.
The 1986 Illinois gubernatorial election was held on November 4, 1986. Republican candidate James R. Thompson won a fourth term in office, defeating the Illinois Solidarity Party nominee, former United States Senator Adlai Stevenson III, by around 400,000 votes.
The 1856 Illinois gubernatorial election was the eleventh election for this office. Democratic governor Joel Aldrich Matteson did not seek re-election. Former Democratic Congressman William Henry Bissell was nominated by the newly formed Republican Party at the Bloomington Convention. Former Whig Mayor of Chicago Buckner S. Morris was nominated on the Know-Nothing Party ticket.
The 1990 Illinois gubernatorial election was held on November 6, 1990 to elect the governor and lieutenant governor of Illinois. The incumbent Governor Jim Thompson chose to retire instead of seeking reelection to a fifth term. The Republican nominee, Secretary of State Jim Edgar, narrowly defeated the Democratic nominee, Attorney General Neil Hartigan, by about 80,000 votes out of the over 3.2 million cast.
The 1976 Illinois gubernatorial election was held in Illinois on November 2, 1976. Incumbent first-term Democratic governor Dan Walker lost renomination to Illinois Secretary of State Michael Howlett, who was an ally of Chicago mayor Richard J. Daley. Howlett then lost the general election to Republican nominee James R. Thompson. This election was the first of seven consecutive Republican gubernatorial victories in Illinois, a streak not broken until the election of Democrat Rod Blagojevich in 2002.
The 1972 Illinois gubernatorial election was held in Illinois on November 7, 1972. Incumbent first-term Republican governor Richard B. Ogilvie lost reelection in an upset to the Democratic nominee, Dan Walker.
The 1968 Illinois gubernatorial election was held in Illinois on November 5, 1968. Democratic nominee, incumbent governor Samuel H. Shapiro, lost reelection to Republican nominee Richard B. Ogilvie, who was the president of the Cook County Board of Commissioners and former sheriff of Cook County.
The 1908 Illinois gubernatorial election was held on November 3, 1908.
The 1912 Illinois gubernatorial election was held on November 5, 1912. Incumbent second-term Republican governor Charles S. Deneen was defeated by the Democratic nominee, former mayor of Chicago Edward Fitzsimmons Dunne.
The 2022 Illinois gubernatorial election took place on November 8, 2022, to elect the governor of Illinois, concurrently with the 2022 Illinois general election. Gubernatorial candidates ran on tickets with candidates for lieutenant governor. The incumbent governor and lieutenant governor, first-term Democrats J. B. Pritzker and Juliana Stratton, sought re-election together against Republican nominees Illinois State Senator Darren Bailey and his running mate Stephanie Trussell.
The 1920 Illinois gubernatorial election was held on November 2, 1920.
The 1924 Illinois gubernatorial election was held on November 4, 1924. Incumbent first-term Republican Governor Len Small defeated Democratic nominee Norman L. Jones with 56.72% of the vote.
The 1880 Illinois gubernatorial election was held on November 2, 1880.
The 1888 Illinois gubernatorial election was held on November 6, 1888.
The 1884 Illinois gubernatorial election was held on November 4, 1884.
The 1924 Illinois lieutenant gubernatorial election was held on November 4, 1924. Incumbent Republican Lieutenant Governor Fred E. Sterling won a landslide reelection.
The 1880 Illinois lieutenant gubernatorial election was held on 2 November 1880 in order to elect the lieutenant governor of Illinois. Republican nominee John Marshall Hamilton defeated Democratic nominee and incumbent member of the Illinois Senate Lewis Baldwin Parsons and Greenback nominee Andrew Blainey Adair.
