Election Results
Recent presidential results.
Democratic presidential vote share
1976–2024MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse).
Republican presidential vote share
1976–2024MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse).
| Indicator | Illinois | U.S. |
|---|---|---|
| Democratic margin 20242024 | +10.7 pts | -1.5 pts |
Governors
State executive.
| Governor | Party | In office |
|---|---|---|
| JB Pritzker | Democratic | 2019–present |
| Bruce Rauner | Republican | 2015–2019 |
| Pat Quinn | Democrat | 2009–2015 |
| Rod R. Blagojevich | Democrat | 2003–2009 |
| George H. Ryan | Republican | 1999–2003 |
| Jim Edgar | Republican | 1991–1999 |
| James Robert Thompson | Republican | 1977–1991 |
| Daniel Walker | Democrat | 1973–1977 |
| Richard Buell Ogilvie | Republican | 1969–1973 |
| Samuel H. Shapiro | Democrat | 1968–1969 |
| Otto Kerner, Jr. | Democrat | 1961–1968 |
| William Grant Stratton | Republican | 1953–1961 |
| Adlai Ewing Stevenson | Democrat | 1949–1953 |
| Dwight Herbert Green | Republican | 1941–1949 |
| John Henry Stelle | Democrat | 1940–1941 |
| Henry Horner | Democrat | 1933–1940 |
| Louis Lincoln Emmerson | Republican | 1929–1933 |
| Lennington Small | Republican | 1921–1929 |
| Frank Orren Lowden | Republican | 1917–1921 |
| Edward Fitzsimmons Dunne | Democrat | 1913–1917 |
| Charles Samuel Deneen | Republican | 1905–1913 |
| Richard Yates Jr. | Republican | 1901–1905 |
| John Riley Tanner | Republican | 1897–1901 |
| John Peter Altgeld | Democrat | 1893–1897 |
| Joseph Wilson Fifer | Republican | 1889–1893 |
| John Marshall Hamilton | Republican | 1883–1885 |
| Shelby Moore Cullom | Republican | 1877–1883 |
| John Lourie Beveridge | Republican | 1873–1877 |
| Richard Yates Sr. | Republican | 1861–1865 |
| John Wood | Republican | 1860–1861 |
| Joel Aldrich Matteson | Democrat | 1853–1857 |
| Augustus C. French | Democrat | 1846–1853 |
| Thomas Ford | Democrat | 1842–1846 |
| Thomas Carlin | Democrat | 1838–1842 |
| Joseph Duncan | Democrat | 1834–1838 |
| William Lee Davidson Ewing | Democrat | 1834–1834 |
| John Reynolds | Democrat | 1830–1834 |
| Ninian Edwards | Republican-Democrat | 1826–1830 |
| Edward Coles | Democrat-Republican | 1822–1826 |
| Shadrach Bond | Democrat-Republican | 1818–1822 |
Source: National Governors Association, current and former governors.
| Indicator | Illinois | U.S. |
|---|---|---|
| Party of governor2025 | Democratic | — |
Senators
U.S. Senate delegation.
Democratic vote share, U.S. Senate elections
1978–2020MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse). Regular-term races; special elections only when no regular race was held. Independents (e.g. caucusing with Democrats) are not counted as Democratic; years without a Democratic nominee are omitted.
Republican vote share, U.S. Senate elections
1978–2022MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse).
| Indicator | Illinois | U.S. |
|---|---|---|
| Senate seats2025 | 2 | 100 |
Representatives
U.S. House delegation.
U.S. House seats apportioned to Illinois
1910–2020U.S. Census Bureau, decennial apportionment counts.
| Indicator | Illinois | U.S. |
|---|---|---|
| House seats2025 | 17 | 435 |
Voting Trends
Turnout and participation.
Total votes cast for president
1976–2024MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse).
| Indicator | Illinois | U.S. |
|---|---|---|
| Voter turnout 20242024 | 64.5% | 63.9% |
Party Distribution
Partisan balance.
| Indicator | Illinois | U.S. |
|---|---|---|
| Democratic trifecta2025 | Yes | — |