Presidential elections · 1976–2024
Iowa Presidential Election Results (1976–2024)
In 2024, Iowa voted for Donald J. Trump (Republican) by R+13.2 — 707,278 Democratic to 927,019 Republican of 1,663,506 votes cast. It last voted Democratic in 2012.
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 1976–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
2024 margin by county
Click a county to see its election results. Hatched areas have no county-level results.
Build your own tables of margins, swings, and vote shares — any mix of states and counties, any election back to 1976.
Iowa results by county
Sorted by 2024 votes cast; margins are 2024 Democratic minus Republican.
Iowa presidential elections — FAQ
Who carried Iowa in the 2024 presidential election?+
Donald J. Trump (Republican) carried Iowa in 2024 by R+13.2, with 1,663,506 votes cast statewide. Data: MIT Election Data & Science Lab.
When did Iowa last vote for a Democratic presidential candidate?+
Iowa last voted Democratic in 2012, when it went D+5.8. It has voted Republican in every presidential election since.
Which Iowa county had the biggest 2024 margin?+
Sioux County had the widest 2024 presidential margin of any Iowa county — R+70.7 on 19,001 votes cast.
What was Iowa's closest presidential election since 1976?+
2000: the margin was D+0.3 — 4,144 votes out of 1,353,022 cast.
Analyze Iowa election results
Chart margins, vote shares, and swings for Iowaand its counties — or line states up side by side. Free while we're in beta.