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Presidential voting trends in Iowa
| Presidential Election voting trends |
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| Read more about what a Bellwether is and Presidential election accuracy. |
| Voting trends by state |
A bellwether is any indicator or predictor of something. In presidential electoral politics, states may be considered bellwethers of future electoral outcomes because of how many times they have voted for the winning candidate or party. Below is an analysis of Iowa's voting record in presidential elections from 1900 to 2024. The state's accuracy is based on the number of times the state has voted for the winning presidential candidate. The majority of statistical data is from the U.S. National Archives and Records Administration and compiled, here, by Ballotpedia, unless otherwise noted.
Presidential election voting record in Iowa
- See also: Presidential voting trends by state and Bellwether
Between 1900 and 2024, Iowa participated in 32 presidential elections.
1900-2024
- Iowa voted for Donald Trump (R) in the 2024 presidential election.
- Between 1900 and 2024, Iowa voted for the winning presidential candidate 75.0% of the time.
- Between 2000 and 2024, Iowa voted for the winning presidential candidate 71.4% of the time.
- Since 1900, Iowa has voted Democratic 34.4% of the time and Republican 65.6% of the time.
- Since 2000, Iowa has voted Democratic 42.9% of the time and Republican 57.1% of the time.
Presidential voting history
Iowa presidential election results (1900-2024)
- 11 Democratic wins
- 21 Republican wins
| Year | 1900 | 1904 | 1908 | 1912 | 1916 | 1920 | 1924 | 1928 | 1932 | 1936 | 1940 | 1944 | 1948 | 1952 | 1956 | 1960 | 1964 | 1968 | 1972 | 1976 | 1980 | 1984 | 1988 | 1992 | 1996 | 2000 | 2004 | 2008 | 2012 | 2016 | 2020 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Winning Party | R | R | R | D | R | R | R | R | D | D | R | R | D | R | R | R | D | R | R | R | R | R | D | D | D | D | R | D | D | R | R | R |
Test your knowledge of how Democratic vote shares have changed over time in Florida, North Carolina, and Iowa. Click "Play" on the widget below to begin.
Test your knowledge of how Republican vote shares have changed over time in Florida, North Carolina, and Iowa. Click "Play" on the widget below to begin.
See also
Use the dropdown menu below to navigate Ballotpedia's coverage of presidential election voting trends in each state.
- Presidential voting history by state
- Presidential voting trends by state
- Presidential election accuracy data
- Presidential statewide margins of victory of five percentage points or fewer, 1948-2024
- Splits between the Electoral College and popular vote
- Results of U.S. House elections in presidential election years, 1920-2020
External links
- U.S. National Archives and Records Administration
- University of California Santa Barbara, The American Presidency Project
Footnotes
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