Presidential elections · 2000–2024
Harrison County, IA — Presidential Election Results (2000–2024)
In 2024, Harrison County, Iowa voted for Donald J. Trump (Republican) by R+41.7 — 2,245 Democratic to 5,566 Republican of 7,959 votes cast. From 2020 to 2024 it shifted 3.2 points toward Republicans. That makes it 28.5 points more Republican than Iowa overall (R+13.2).
Data: MIT Election Data & Science Lab, Harvard Dataverse.
Margin by election, 2000–2024
Democratic minus Republican, in points of all votes cast — blue bars Democratic, red Republican.
Every election in Harrison County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 2,245 | 5,566 | 148 | 28.2% | 69.9% | R+41.7 |
| 2020 | 2,440 | 5,580 | 135 | 29.9% | 68.4% | R+38.5 |
| 2016 | 2,131 | 4,902 | 432 | 28.5% | 65.7% | R+37.1 |
| 2012 | 3,136 | 4,065 | 121 | 42.8% | 55.5% | R+12.7 |
| 2008 | 3,555 | 3,909 | 114 | 46.9% | 51.6% | R+4.7 |
| 2004 | 2,906 | 4,680 | 94 | 37.8% | 60.9% | R+23.1 |
| 2000 | 2,551 | 3,802 | 190 | 39.0% | 58.1% | R+19.1 |
Harrison County presidential elections — FAQ
Who carried Harrison County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Harrison County, Iowa in 2024 by R+41.7, with 7,959 votes cast. Data: MIT Election Data & Science Lab.
How did Harrison County shift between 2020 and 2024?+
Harrison County shifted 3.2 points toward Republicans between 2020 (R+38.5) and 2024 (R+41.7).
Is Harrison County more Democratic or Republican than Iowa overall?+
In 2024, Harrison County went R+41.7 while Iowa overall went R+13.2 — 28.5 points more Republican than the state.
Where does this election data come from?+
County-level presidential returns (2000–2024) come from the MIT Election Data and Science Lab (MEDSL), published on the Harvard Dataverse. pumsdata is an independent product that makes the data easy to map and compare, and is not affiliated with MEDSL or Harvard.