Election Results
In the 2024 presidential election, Iowa voters favored the Republican candidate with 56.0% of the vote.
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).
- •Iowa has a documented history of leaning Republican in recent presidential elections.
Governors
Kim Reynolds (R) has been governor since 2017, with Republicans controlling both chambers.
| Governor | Party | In office |
|---|---|---|
| Kim Reynolds | Republican | 2017–present |
| Chet Culver | Democratic | 2007–2011 |
| Thomas J. Vilsack | Democratic | 1999–2007 |
| Robert D. Ray | Republican | 1969–1983 |
| Robert David Fulton | Democratic | 1969–1969 |
| Harold Everett Hughes | Democratic | 1963–1969 |
| Norman Arthur Erbe | Republican | 1961–1963 |
| Herschel C. Loveless | Democratic | 1957–1961 |
| Leo Arthur Hoegh | Republican | 1955–1957 |
| Leo Elthon | Republican | 1954–1955 |
| William S. Beardsley | Republican | 1949–1954 |
| Robert Donald Blue | Republican | 1945–1949 |
| Bourke Blakemore Hickenlooper | Republican | 1943–1945 |
| George Allison Wilson | Republican | 1939–1943 |
| Nelson George Kraschel | Democratic | 1937–1939 |
| Clyde Laverne Herring | Democratic | 1933–1937 |
| Daniel Webster Turner | Republican | 1931–1933 |
| John Hammill | Republican | 1925–1931 |
| Nathan Edward Kendall | Republican | 1921–1925 |
| William Lloyd Harding | Republican | 1917–1921 |
| George Washington Clarke | Republican | 1913–1917 |
| Beryl Franklin Carroll | Republican | 1909–1913 |
| Warren Garst | Republican | 1908–1909 |
| Albert Baird Cummins | Republican | 1902–1908 |
| Leslie Mortier Shaw | Republican | 1898–1902 |
| Francis Marion Drake | Republican | 1896–1898 |
| Frank Darr Jackson | Republican | 1894–1896 |
| Horace Boies | Democratic | 1890–1894 |
| William Larrabee | Republican | 1886–1890 |
| Buren Robinson Sherman | Republican | 1882–1886 |
| John Henry Gear | Republican | 1878–1882 |
| Joshua G. Newbold | Republican | 1877–1878 |
| Cyrus Clay Carpenter | Republican | 1872–1876 |
| Samuel Merrill | Republican | 1868–1872 |
| William Milo Stone | Republican | 1864–1868 |
| Ralph Phillips Lowe | Republican | 1858–1860 |
| James Wilson Grimes | Whig | 1854–1858 |
| Stephen Hempstead | Democratic | 1850–1854 |
| Ansel Briggs | Democratic | 1846–1850 |
Source: National Governors Association, current and former governors.
- •Iowa traditionally holds the first presidential nominating caucuses in the nation.
Senators
Iowa is currently represented in the U.S. Senate by Chuck Grassley and Joni Ernst.
Democratic vote share, U.S. Senate elections
1978–2022MIT 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).
- •U.S. Senators from Iowa serve staggered six-year terms.
Representatives
Iowa is allocated 4 seats in the U.S. House of Representatives based on the 2020 Census apportionment.
U.S. House seats apportioned to Iowa
1910–2020U.S. Census Bureau, decennial apportionment counts.
- •Congressional district boundaries in Iowa are redrawn after each decennial census.
Voting Trends
Voting trends in Iowa show a consistent Republican lean across recent presidential elections.
Total votes cast for president
1976–2024MIT Election Data and Science Lab, compiled from certified state results (Harvard Dataverse).
- •Voter turnout in Iowa typically exceeds 60% in presidential election years.
Party Distribution
Iowa sends 4 members to the U.S. House and is represented in the Senate by Chuck Grassley and Joni Ernst.
- •Party control of Iowa's state legislature has been consistent in recent election cycles.