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Illinois is a Democratic stronghold in presidential elections and one of the "Big Three" Democratic strongholds alongside California and New York. It is one of the most Democratic states in the nation with all state executive offices and both state legislative branches held by Democrats.[1][2] For most of its history, Illinois was widely considered to be a swing state, voting for the winner of all but two presidential elections in the 20th century. Political party strength in Illinois is highly dependent upon Cook County, and the state's reputation as a blue state rests upon the fact that over 40% of its population and political power is concentrated in Chicago, Cook County, and the Chicago metropolitan area. Outside of Chicago, the suburban collar counties continue trending Democratic[3] while downstate Illinois can be considered more conservative with several Democratic leaning regions including Champaign-Urbana, Bloomington-Normal, Rockford, Peoria, the Quad Cities, and suburban St. Louis.[4]
Illinois's electoral college votes have gone towards the Democratic presidential candidate for the past eight elections, and its congressional makeup tilts heavily Democratic with a 14-3 majority as of 2024. However, it has a history of competitive statewide elections and has elected a small number of moderate Republicans including Governors Jim Edgar, George Ryan, and Bruce Rauner, Senators Peter Fitzgerald and Mark Kirk, and other state executive officeholders including Judy Baar Topinka and Dan Rutherford.
The following table indicates the party of elected officials in the U.S. state of Illinois:
- Governor
- Lieutenant Governor
- Secretary of State
- Attorney General
- Comptroller (Auditor before 1972)
- Treasurer
The table also indicates the historical party composition in the:
| Year | Executive offices | General Assembly | United States Congress | Electoral votes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Governor | Lt. Governor | Sec. of State | Attorney General | Comptroller/ Auditor[lower-alpha 1] | Treasurer | State Senate | State House | U.S. Senator (Class II) | U.S. Senator (Class III) | U.S. House | ||
| 1809 | Ninian Edwards (DR)[lower-alpha 2] | Nathaniel Pope (DR) | ||||||||||
| 1810 | ||||||||||||
| 1811 | ||||||||||||
| 1812 | H. H. Maxwell | Shadrach Bond (DR)[lower-alpha 3] | ||||||||||
| 1813 | ||||||||||||
| 1814 | vacant | |||||||||||
| 1815 | Benjamin Stephenson (DR)[lower-alpha 3] | |||||||||||
| 1816 | Daniel Pope Cook (DR) | |||||||||||
| 1817 | Joseph Phillips (DR) | Robert Blackwell | Nathaniel Pope (DR)[lower-alpha 3] | |||||||||
| 1818 | Elijah C. Berry (DR) | |||||||||||
| Shadrach Bond (DR) | Pierre Menard (DR) | Elias Kane (DR) | Daniel Pope Cook (DR) | John Thomas (DR) | DR majority | DR majority | Jesse B. Thomas (DR) | Ninian Edwards (DR) | John McLean (DR) | |||
| 1819 | William Mears (DR) | R. K. McLaughlin (DR) | DR majority | DR majority | Daniel Pope Cook (DR) | |||||||
| 1820 | Monroe/ Tompkins (DR)  | |||||||||||
| 1821 | Samuel D. Lockwood (DR) | DR majority | DR majority | |||||||||
| 1822 | Samuel D. Lockwood (DR) | James Turney (DR) | ||||||||||
| 1823 | Edward Coles (DR) | Adolphus Hubbard (DR) | David Blackwell (DR) | Abner Field (DR) | DR majority | DR majority | ||||||
| 1824 | 2 – Jackson/ Calhoun (DR)  1 – Adams/ Calhoun (DR) [lower-alpha 4] | |||||||||||
| Morris Birkbeck (DR) | John McLean (DR) | |||||||||||
| 1825 | George Forquer (DR) | DR majority | DR majority | Jesse B. Thomas (NR) | Elias Kane (J) | Daniel Pope Cook (NR) | ||||||
| 1826 | Elijah C. Berry (D) | D majority | D majority | |||||||||
| 1827 | Ninian Edwards (DR) | William Kinney (DR) | James Hall (D) | D majority | D majority | Joseph Duncan (J) | ||||||
| 1828 | Jackson/ Calhoun (D) | |||||||||||
| 1829 | Alexander Pope Field (D) | George Forquer (D) | D majority | D majority | John McLean (J) | |||||||
| 1830 | ||||||||||||
| David J. Baker (J) | ||||||||||||
| 1831 | John Reynolds (D)[lower-alpha 5] | Zadok Casey (D)[lower-alpha 5] | James T. B. Stapp (D) | John Dement (D) | D majority | D majority | John M. Robinson (J) | |||||
| 1832 | Jackson/ Van Buren (D) | |||||||||||
| 1833 | James Semple (D) | D majority | D majority | 3J | ||||||||
| William Lee D. Ewing (D) | ||||||||||||
| 1834 | Ninian Wirt Edwards (D) | |||||||||||
| W. L. D. Ewing (D)[lower-alpha 6] | vacant | |||||||||||
| 1835 | Joseph Duncan (D) | Alexander M. Jenkins (D)[lower-alpha 7] | Jesse B. Thomas Jr. (D) | Levi Davis (W) | D majority | D majority | ||||||
| 1836 | Walter B. Scates (D) | Charles Gregory (D) | W. L. D. Ewing (J) | Van Buren/ Johnson (D) | ||||||||
| 1837 | William H. Davidson (D) | Usher F. Linder (D) | John D. Whiteside (D) | 22D, 18W | 57D, 24W, 10? | John M. Robinson (D) | Richard M. Young (D) | 3D | ||||
| 1838 | George W. Olney (D) | |||||||||||
| 1839 | Thomas Carlin (D) | Stinson Anderson (D) | Wickliffe Kitchell (D) | 20D, 20W[lower-alpha 8] | 46W, 40D, 5I[lower-alpha 9] | 2D, 1W | ||||||
| 1840 | Josiah Lamborn (D) | Van Buren/ Johnson (D) | ||||||||||
| Stephen Douglas (D) | ||||||||||||
| 1841 | Lyman Trumbull (D) | James Shields (D) | Milton Carpenter (D) | 26D, 14W | 51D, 40W | Samuel McRoberts (D) | 1D, 1ID, 1W | |||||
| 1842 | ||||||||||||
| 1843 | Thomas Ford (D) | John Moore (D) | Thompson Campbell (D) | James A. McDougall (D) | W. L. D. Ewing (D) | 30D, 12W | 84D, 37W | Sidney Breese (D) | 6D, 1W | |||
| James Semple (D) | ||||||||||||
| 1844 | Polk/ Dallas (D) | |||||||||||
| 1845 | 26D, 15W | 78D, 40W, 3? | ||||||||||
| 1846 | David B. Campbell (D) | Thomas H. Campbell (D) | ||||||||||
| 1847 | Augustus C. French (D) | Joseph Wells (D) | Horace S. Cooley (D) | 29D, 12W | 76D, 44W, 3? | Stephen Douglas (D) | ||||||
| 1848 | office abolished 1848–1867 | John Moore (D) | Cass/ Butler (D) | |||||||||
| 1849 | William McMurtry (D) | 17D, 7W, 1? | 54D, 21W | James Shields (D) | ||||||||
| 1850 | David L. Gregg (D) | |||||||||||
| 1851 | 17D, 8W | 46D, 29W | ||||||||||
| 1852 | Pierce/ King (D) | |||||||||||
| 1853 | Joel Aldrich Matteson (D) | Gustav Koerner (D) | Alexander Starne (D) | 20D, 5W | 56D, 18W, 1FS | 5D, 4W | ||||||
| 1854 | ||||||||||||
| 1855 | 14D, 11W | 41W, 34D[lower-alpha 10] | Lyman Trumbull (D) | 5D, 2O, 2R | ||||||||
| 1856 | Buchanan/ Breckinridge (D) | |||||||||||
| 1857 | William Henry Bissell (R)[lower-alpha 11] | John Wood (R) | Ozias M. Hatch (R) | Jesse K. Dubois (R) | James Miller (R) | 13D, 12R | 55D, 30R | Lyman Trumbull (R) | 5D, 4R | |||
| 1858 | ||||||||||||
| 1859 | 14D, 11R | 40D, 35R | ||||||||||
| 1860 | Lincoln/ Hamlin (R) | |||||||||||
| John Wood (R)[lower-alpha 12] | Thomas Marshall (D) | |||||||||||
| 1861 | Richard Yates (R) | Francis Hoffmann (R) | William Butler (R) | 13R, 12D | 41R, 34D | |||||||
| Orville H. Browning (R) | ||||||||||||
| 1862 | ||||||||||||
| 1863 | Alexander Starne (D) | 13D, 12R | 55D, 30R | William Richardson (D) | 9D, 5R | |||||||
| 1864 | Lincoln/ Johnson (NU) | |||||||||||
| 1865 | Richard J. Oglesby (R) | William Bross (R) | Sharon Tyndale (R) | Orlin H. Miner (R) | James H. Beveridge (R) | 14R, 11D | 51R, 34D | Richard Yates (R) | 11R, 3D | |||
| 1866 | ||||||||||||
| 1867 | Robert G. Ingersoll (R) | George W. Smith (R) | 16R, 9D | 60R, 25D | ||||||||
| 1868 | Grant/ Colfax (R) | |||||||||||
| 1869 | John M. Palmer (R) | John Dougherty (R) | Edward Rummel (R) | Washington Bushnell (R) | Charles E. Lippincott (R) | Erastus Newton Bates (R) | 18R, 7D | 58R, 27D | 10R, 4D | |||
| 1870 | ||||||||||||
| 1871 | 30R, 20D | 98R, 76D, 1I | John A. Logan (R) | Lyman Trumbull (LR) | 8R, 6D | |||||||
| 1872 | Grant/ Wilson (R) | |||||||||||
| 1873 | Richard J. Oglesby (R)[lower-alpha 13] | John Lourie Beveridge (R) | George H. Harlow (R) | James K. Edsall (R) | Edward Rutz (R) | 33R, 18D[lower-alpha 14] | 86R, 67D | Richard J. Oglesby (R) | 14R, 5D | |||
| John Lourie Beveridge (R)[lower-alpha 12] | John Early (R) | |||||||||||
| 1874 | ||||||||||||
| 1875 | Archibald A. Glenn (D) | Thomas S. Ridgway (R) | 24R, 18D, 9I[lower-alpha 15] | 69R, 42D, 41I[lower-alpha 16] | 10D, 7R, 2I | |||||||
| 1876 | 11D, 6R, 2I | Hayes/ Wheeler (R) | ||||||||||
| 1877 | Shelby M. Cullom (R)[lower-alpha 17] | Andrew Shuman (R) | Thomas B. Needles (R) | Edward Rutz (R) | 22D, 21R, 8I[lower-alpha 18] | 79R, 67D, 7I | David Davis (I) | 12R, 7D | ||||
| 1878 | ||||||||||||
| 1879 | John C. Smith (R) | 26R, 24D, 1I | 80R, 60D, 10GB, 3Soc | John A. Logan (R) | 12R, 6D, 1GB | |||||||
| 1880 | Garfield/ Arthur (R) | |||||||||||
| 1881 | John Marshall Hamilton (R) | Henry D. Dement (R) | James McCartney (R) | Charles Philip Swigert (R) | Edward Rutz (R) | 32R, 18D, 1Soc | 82R, 71D | 13R, 6D | ||||
| 1882 | ||||||||||||
| 1883 | John Marshall Hamilton (R)[lower-alpha 12] | William James Campbell (R) | John C. Smith (R) | 31R, 20D | 77R, 75D, 1I | Shelby M. Cullom (R) | 11R, 8D, 1ID | |||||
| 1884 | Blaine/ Logan (R) | |||||||||||
| 1885 | Richard J. Oglesby (R) | John C. Smith (R) | George Hunt (R) | Jacob Gross (R) | 26R, 25D | 76D, 76R, 1I[lower-alpha 19] | 10D, 10R | |||||
| 1886 | ||||||||||||
| 1887 | John R. Tanner (R) | 33R, 18D | 92R, 61D | Charles B. Farwell (R) | 14R, 6D | |||||||
| 1888 | Harrison/ Morton (R) | |||||||||||
| 1889 | Joseph W. Fifer (R) | Lyman Beecher Ray (R) | Isaac N. Pearson (R) | Charles W. Pavey (R) | Charles Becker (R) | 33R, 18D | 92R, 61D | 13R, 7D | ||||
| 1890 | ||||||||||||
| 1891 | Edward S. Wilson (D) | 27R, 24D | 77D, 73R, 3FA | John M. Palmer (D) | 14D, 6R | |||||||
| 1892 | Cleveland/ Stevenson (D) | |||||||||||
| 1893 | John Peter Altgeld (D) | Joseph B. Gill (D) | William H. Hinrichsen (D) | Maurice T. Moloney (D) | David Gore (D) | Rufus N. Ramsay (D) | 29D, 22R | 78D, 75R | 11D, 11R | |||
| 1894 | ||||||||||||
| 1895 | Henry Wulff (R) | 33R, 18D | 92R, 61D | 20R, 2D | ||||||||
| 1896 | 22R | McKinley/ Hobart (R) | ||||||||||
| 1897 | John R. Tanner (R) | William Northcott (R) | James A. Rose (R) | Edward C. Akin (R) | James S. McCullough (R) | Henry L. Hertz (R) | 39R, 11D, 1Pop | 89R, 62D, 2Pop | William E. Mason (R) | 17R, 5D | ||
| 1898 | ||||||||||||
| 1899 | Floyd K. Whittlemore (R) | 34R, 16D, 1Pop | 81R, 71D, 1Proh | 14R, 8D | ||||||||
| 1900 | McKinley/ Roosevelt (R) | |||||||||||
| 1901 | Richard Yates Jr. (R) | Howland J. Hamlin (R) | Moses O. Williamson (R) | 32R, 19D | 81R, 72D | 11D, 11R | ||||||
| 1902 | ||||||||||||
| 1903 | Fred A. Busse (R) | 36R, 15D | 88R, 62D, 2PO, 1Proh | Albert J. Hopkins (R) | 17R, 8D | |||||||
| 1904 | Roosevelt/ Fairbanks (R) | |||||||||||
| 1905 | Charles S. Deneen (R) | Lawrence Y. Sherman (R) | William H. Stead (R) | Len Small (R) | 41R, 10D | 91R, 57D, 3Proh, 2Soc | 24R, 1D | |||||
| 1906 | ||||||||||||
| 1907 | John F. Smulski (R) | 44R, 7D | 90R, 60D, 3Proh | 20R, 5D | ||||||||
| 1908 | Taft/ Sherman (R) | |||||||||||
| 1909 | John G. Oglesby (R) | Andrew Russel (R) | 38R, 13D | 88R, 65D | William Lorimer (R) | 19R, 6D | ||||||
| 1910 | ||||||||||||
| 1911 | Edward E. Mitchell (R) | 34R, 17D | 82R, 68D, 2I, 1Proh | 14R, 11D | ||||||||
| 1912 | Cornelius Doyle (R) | Wilson/ Marshall (D) | ||||||||||
| 1913 | Edward F. Dunne (D) | Barratt O'Hara (D) | Harry Woods (D) | Patrick J. Lucey (D) | James J. Brady (D) | William F. Ryan Jr. (D) | 25R, 24D, 2Prog[lower-alpha 20] | 71D, 52R, 27Prog, 3Soc[lower-alpha 21] | J. Hamilton Lewis (D) | Lawrence Y. Sherman (R) | 20D, 5R, 2Prog | |
| 1914 | ||||||||||||
| 1915 | Lewis Stevenson (D) | Andrew Russel (R) | 25D, 25R, 1Prog[lower-alpha 22] | 79R, 70D, 2Soc, 1I, 1Prog | 16R, 10D, 1Prog | |||||||
| 1916 | Hughes/ Fairbanks (R) | |||||||||||
| 1917 | Frank O. Lowden (R) | John G. Oglesby (R) | Louis L. Emmerson (R) | Edward Brundage (R) | Andrew Russel (R) | Len Small (R) | 33R, 18D | 85R, 67D, 1I | 21R, 6D | |||
| 1918 | ||||||||||||
| 1919 | Fred E. Sterling (R) | 34R, 17D | 90R, 63D | Medill McCormick (R) | 22R, 5D | |||||||
| 1920 | Harding/ Coolidge (R) | |||||||||||
| 1921 | Len Small (R) | Fred E. Sterling (R) | Edward E. Miller (R) | 43R, 8D | 95R, 58D | William B. McKinley (R) | 24R, 3D | |||||
| 1922 | ||||||||||||
| 1923 | Oscar Nelson (R) | 42R, 9D | 89R, 63D, 1I | 20R, 7D | ||||||||
| 1924 | Coolidge/ Dawes (R) | |||||||||||
| 1925 | Oscar E. Carlstrom (R) | Oscar Nelson (R) | Omer N. Custer (R) | 38R, 13D | 94R, 59D | Charles S. Deneen (R) | 22R, 5D | |||||
| 1926 | ||||||||||||
| 1927 | Garrett D. Kinney (R) | 41R, 10D | 93R, 60D | vacant | 20R, 7D | |||||||
| 1928 | Otis F. Glenn (R) | Hoover/ Curtis (R) | ||||||||||
| 1929 | Louis L. Emmerson (R) | William J. Stratton (R) | Omer N. Custer (R) | 40R, 11D | 91R, 62D | 21R, 6D | ||||||
| 1930 | ||||||||||||
| 1931 | Edward Barrett (D) | 33R, 18D | 81R, 72D | J. Hamilton Lewis (D) | 15R, 12D | |||||||
| 1932 | 14R, 13D | Roosevelt/ Garner (D) | ||||||||||
| 1933 | Henry Horner (D)[lower-alpha 11] | Thomas Donovan (D) | Edward J. Hughes (D) | Otto Kerner Sr. (D)[lower-alpha 23] | Edward Barrett (D) | John C. Martin (D) | 33D, 18R | 80D, 73R | William H. Dieterich (D) | 19D, 8R | ||
| 1934 | ||||||||||||
| 1935 | John H. Stelle (D) | 35D, 16R | 84D, 69R | 21D, 6R | ||||||||
| 1936 | ||||||||||||
| 1937 | John H. Stelle (D) | John C. Martin (D) | 34D, 17R | 86D, 67R | ||||||||
| 1938 | ||||||||||||
| 1939 | John E. Cassidy (D)[lower-alpha 24] | Louie E. Lewis (D) | 30D, 21R | 80R, 73D | Scott W. Lucas (D) | 17D, 10R | ||||||
| 1940 | James M. Slattery (D) | |||||||||||
| John H. Stelle (D)[lower-alpha 12] | vacant | C. Wayland Brooks (R) | Roosevelt/ Wallace (D) | |||||||||
| 1941 | Dwight H. Green (R) | Hugh W. Cross (R) | George F. Barrett (R) | Arthur C. Lueder (R) | Warren Wright (R) | 28R, 23D | 79R, 74D | 16R, 11D | ||||
| 1942 | ||||||||||||
| 1943 | William Stratton (R) | 84R, 69D | 19R, 7D | |||||||||
| 1944 | Richard Y. Rowe (R) | Roosevelt/ Truman (D) | ||||||||||
| 1945 | Edward Barrett (D) | Conrad F. Becker (R) | 34R, 17D | 78R, 75D | 15R, 11D | |||||||
| 1946 | ||||||||||||
| 1947 | Richard Y. Rowe (R) | 37R, 14D | 87R, 66D | 20R, 6D | ||||||||
| 1948 | Truman/ Barkley (D) | |||||||||||
| 1949 | Adlai Stevenson II (D) | Sherwood Dixon (D) | Ivan A. Elliott (D) | Benjamin O. Cooper (D) | Ora Smith (D) | 33R, 18D | 79D, 74R | Paul Douglas (D) | 14R, 12D | |||
| 1950 | ||||||||||||
| 1951 | William Stratton (R) | 31R, 27D | 84R, 69D | Everett Dirksen (R) | 18R, 8D | |||||||
| 1952 | Eisenhower/ Nixon (R) | |||||||||||
| 1953 | William Stratton (R) | John William Chapman (R) | Charles F. Carpentier (R) | Latham Castle (R)[lower-alpha 23] | Orville Hodge (R) | Elmer J. Hoffman (R) | 38R, 13D | 16R, 9D | ||||
| 1954 | ||||||||||||
| 1955 | Warren Wright (R) | 32R, 19D | 79R, 74D | 13R, 12D | ||||||||
| 1956 | Lloyd Morey (R)[lower-alpha 24] | |||||||||||
| 1957 | Elbert S. Smith (R) | Elmer J. Hoffman (R) | 38R, 20D | 94R, 83D | 14R, 11D | |||||||
| 1958 | ||||||||||||
| 1959 | Grenville Beardsley (R)[lower-alpha 11] | Joseph D. Lohman (D) | 34R, 24D | 92D, 85R | 14D, 11R | |||||||
| 1960 | William L. Guild (R)[lower-alpha 24] | Kennedy/ Johnson (D) | ||||||||||
| 1961 | Otto Kerner Jr. (D)[lower-alpha 23] | Samuel H. Shapiro (D) | William G. Clark (D) | Michael Howlett (D) | 31R, 27D | 89R, 88D | ||||||
| 1962 | Francis S. Lorenz (D) | |||||||||||
| 1963 | William J. Scott (R) | 35R, 23D | 90R, 87D | 12D, 12R | ||||||||
| 1964 | William H. Chamberlain (D) | Johnson/ Humphrey (D) | ||||||||||
| 1965 | Paul Powell (D) | 33R, 25D | 118D, 59R | 13D, 11R | ||||||||
| 1966 | ||||||||||||
| 1967 | Adlai Stevenson III (D) | 38R, 20D | 99R, 78D | Charles H. Percy (R) | 12D, 12R | |||||||
| 1968 | Nixon/ Agnew (R) | |||||||||||
| Samuel H. Shapiro (D)[lower-alpha 12] | vacant | |||||||||||
| 1969 | Richard B. Ogilvie (R) | Paul Simon (D) | William J. Scott (R)[lower-alpha 25] | 94R, 83D | ||||||||
| Ralph T. Smith (R) | ||||||||||||
| 1970 | ||||||||||||
| 1971 | John W. Lewis Jr. (R) | Alan J. Dixon (D) | 29D, 29R[lower-alpha 26] | 90R, 87D | Adlai Stevenson III (D) | |||||||
| 1972 | ||||||||||||
| 1973 | Dan Walker (D) | Neil Hartigan (D) | Michael Howlett (D) | George W. Lindberg (R) | 30R, 29D | 92R, 84D, 1I | 14R, 10D | |||||
| 1974 | ||||||||||||
| 1975 | 34D, 25R | 98D, 76R, 3I | 13D, 11R | |||||||||
| 1976 | Ford/ Dole (R) | |||||||||||
| 1977 | James R. Thompson (R) | Dave O'Neal (R)[lower-alpha 7] | Alan J. Dixon (D) | Michael Bakalis (D) | Donald R. Smith (R) | 93D, 83R, 1I | 12D, 12R | |||||
| 1978 | ||||||||||||
| 1979 | Roland Burris (D) | Jerome Cosentino (D) | 32D, 27R | 88D, 88R, 1I[lower-alpha 27] | 13R, 11D | |||||||
| 1980 | Tyrone C. Fahner (R)[lower-alpha 24] | 14R, 10D | Reagan/ Bush (R) | |||||||||
| 1981 | 30D, 29R | 91R, 85D, 1I | Alan J. Dixon (D) | |||||||||
| vacant | Jim Edgar (R)[lower-alpha 28] | |||||||||||
| 1982 | ||||||||||||
| 1983 | George Ryan (R) | Neil Hartigan (D) | James Donnewald (D) | 33D, 26R | 70D, 48R | 12D, 10R | ||||||
| 1984 | ||||||||||||
| 1985 | 31D, 28R | 67D, 51R | Paul Simon (D) | 13D, 9R | ||||||||
| 1986 | ||||||||||||
| 1987 | Jerome Cosentino (D) | |||||||||||
| 1988 | Bush/ Quayle (R) | |||||||||||
| 1989 | 68D, 50R | 14D, 8R | ||||||||||
| 1990 | ||||||||||||
| 1991 | Jim Edgar (R) | Bob Kustra (R)[lower-alpha 7] | George Ryan (R) | Roland Burris (D) | Dawn Clark Netsch (D) | Pat Quinn (D) | 72D, 46R | 15D, 7R | ||||
| 1992 | Clinton/ Gore (D) | |||||||||||
| 1993 | 32R, 27D | 67D, 51R | Carol Moseley Braun (D) | 12D, 8R | ||||||||
| 1994 | ||||||||||||
| 1995 | Jim Ryan (R) | Loleta Didrickson (R) | Judy Baar Topinka (R) | 33R, 26D | 64R, 54D | 10D, 10R | ||||||
| 1996 | ||||||||||||
| 1997 | 31R, 28D | 60D, 58R | Dick Durbin (D) | |||||||||
| 1998 | ||||||||||||
| vacant | ||||||||||||
| 1999 | George Ryan (R) | Corinne Wood (R) | Jesse White (D) | Daniel Hynes (D) | 32R, 27D | 62D, 56R | Peter Fitzgerald (R) | |||||
| 2000 | Gore/ Lieberman (D) | |||||||||||
| 2001 | ||||||||||||
| 2002 | ||||||||||||
| 2003 | Rod Blagojevich (D)[lower-alpha 29] | Pat Quinn (D) | Lisa Madigan (D) | 32D, 26R, 1I | 66D, 52R | 10R, 9D | ||||||
| 2004 | Kerry/ Edwards (D) | |||||||||||
| 2005 | 31D, 27R, 1I | 65D, 53R | Barack Obama (D)[lower-alpha 30] | 10D, 9R | ||||||||
| 2006 | ||||||||||||
| 2007 | Alexi Giannoulias (D) | 37D, 22R | 66D, 52R | |||||||||
| 10D, 8R | ||||||||||||
| 2008 | 67D, 51R | Obama/ Biden (D) | ||||||||||
| 11D, 8R | ||||||||||||
| 2009 | Pat Quinn (D)[lower-alpha 12] | vacant | 70D, 48R | Roland Burris (D)[lower-alpha 24] | 12D, 7R | |||||||
| 2010 | ||||||||||||
| 2011 | Sheila Simon (D) | Judy Baar Topinka (R)[lower-alpha 11] | Dan Rutherford (R) | 35D, 24R | 64D, 54R | Mark Kirk (R) | 11R, 8D | |||||
| 2012 | ||||||||||||
| 2013 | 40D, 19R | 71D, 47R | 12D, 6R | |||||||||
| 2014 | ||||||||||||
| 2015 | Bruce Rauner (R) | Evelyn Sanguinetti (R) | Leslie Munger (R)[lower-alpha 24] | Mike Frerichs (D) | 39D, 20R | 10D, 8R | ||||||
| 2016 | Clinton/ Kaine (D) | |||||||||||
| 2017 | Susana Mendoza (D) | 37D, 22R | 67D, 51R | Tammy Duckworth (D) | 11D, 7R | |||||||
| 2018 | ||||||||||||
| 2019 | J. B. Pritzker (D) | Juliana Stratton (D) | Kwame Raoul (D) | 40D, 19R | 74D, 44R | 13D, 5R | ||||||
| 2020 | Biden/ Harris (D) | |||||||||||
| 2021 | 41D, 18R | 73D, 45R | ||||||||||
| 2022 | ||||||||||||
| 2023 | Alexi Giannoulias (D) | 40D, 19R | 78D, 40R | 14D, 3R | ||||||||
| 2024 | [to be determined] | |||||||||||
- The Office of Illinois Auditor of Public Accounts existed from 1818-1973, when it was eliminated by the 1970 Constitution and replaced with the office of Comptroller. George W. Lindberg was the first Illinois Comptroller
- Territorial governor appointed by the President of the United States.
- Delegate to the U.S. House of Representatives from Illinois Territory.
- Resigned following election to United States House of Representatives.
- Elected a Democrat, William Lee D. Ewing, as a minority-party Speaker.
- An Anti-Nebraska Democrat, Thomas J. Turner, was elected in coalition with the Whigs to be a minority-party Speaker.
- Resigned so that Lieutenant Governor John Lourie Beveridge, acting as governor, would appoint him to the United States Senate.
- Due to the ascension of Lt. Gov. Beveridge to the Governorship after Gov. Oglesby took a U.S. Senate seat, the President Pro Tempore elected by the Senate, John Early, became acting Lt. Governor.[5]
- A coalition of Democrats and Independents organized the Senate, and chose Archibald A. Glenn, a Democrat, to be President Pro Tempore. Due to the vacancy in the Lt. Governorship from John Beveridge ascending to be Governor in 1873, Glenn also became acting Lt. Governor.[5]
- A coalition of Democrats and Independents organized the House, and chose Elijah Haines, a Independent, to be Speaker.[5]
- Resigned to take an elected seat in the United States Senate.
- A coalition of Democrats and Independents organized the Senate, and chose Fawcett Plumb, an Independent tied to the Farmers' Association, to be President Pro Tempore.[5]
- The Independent, Elijah Haines, was elected Speaker with Democratic support, giving them control.
- After 76 ballots, a Democrat, William B. McKinley, was elected Speaker with Republican votes.[6]
- Resigned to take seat on the United States Court of Appeals for the Seventh Circuit.
- Removed from Office upon tax fraud conviction.[7]
- The Independent, Taylor Pouncey, caucused with the Democrats, giving them the votes to control the Speakership and run the House.[8]
- Impeached and removed from office by the state legislature on corruption charges.
- Resigned following election as president of the United States.
- Regarding resignations and appointments; the person who held the office for the majority of the year is listed as the office holder for that year.
Gallery of Illinois presidential election results
Illinois in the 2000 presidential election. Gore v. Bush.
Illinois in the 2004 presidential election. Kerry v. Bush.
Illinois in the 2008 presidential election. Obama v. McCain.
Illinois in the 2012 presidential election. Obama v. Romney.
Illinois in the 2016 presidential election. Clinton v. Trump.
Illinois in the 2020 presidential election. Biden v. Trump.
Gallery of Illinois US Senate election results
2004 US Senate election results.
2008 US Senate election results.
2010 US Senate election results.
2014 US Senate election results.
2016 US Senate election results.
2020 US Senate election results.
2022 US Senate election results.
Gallery of Illinois gubernatorial election results
Illinois gubernatorial race in 2002
Illinois gubernatorial race in 2006
Illinois gubernatorial race in 2010. Notice that Pat Quinn won while carrying the same counties as losing Democratic Senate candidate Alexi Giannoulias.
2014 Illinois gubernatorial election. Incumbent Democratic governor Pat Quinn was defeated for reelection by Republican candidate Bruce Rauner. Notice that Rauner carried every county except Cook County.
2018 Illinois gubernatorial election. Strong Democratic turnout in Chicago, Cook County, all of the suburban collar counties, and modest growth in downstate support (mainly in the smaller cities) drove J. B. Pritzker's decisive victory.
2022 Illinois gubernatorial election. Results were very similar to 2018.
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