Presidential elections · 2000–2024
Louisa County, IA — Presidential Election Results (2000–2024)
In 2024, Louisa County, Iowa voted for Donald J. Trump (Republican) by R+40.9 — 1,480 Democratic to 3,584 Republican of 5,142 votes cast. From 2020 to 2024 it shifted 7.5 points toward Republicans. That makes it 27.7 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 Louisa County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 1,480 | 3,584 | 78 | 28.8% | 69.7% | R+40.9 |
| 2020 | 1,726 | 3,506 | 100 | 32.4% | 65.8% | R+33.4 |
| 2016 | 1,648 | 3,069 | 291 | 32.9% | 61.3% | R+28.4 |
| 2012 | 2,452 | 2,420 | 96 | 49.4% | 48.7% | D+0.6 |
| 2008 | 2,523 | 2,314 | 83 | 51.3% | 47.0% | D+4.2 |
| 2004 | 2,297 | 2,572 | 47 | 46.7% | 52.3% | R+5.6 |
| 2000 | 2,294 | 2,207 | 136 | 49.5% | 47.6% | D+1.9 |
Louisa County presidential elections — FAQ
Who carried Louisa County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Louisa County, Iowa in 2024 by R+40.9, with 5,142 votes cast. Data: MIT Election Data & Science Lab.
How did Louisa County shift between 2020 and 2024?+
Louisa County shifted 7.5 points toward Republicans between 2020 (R+33.4) and 2024 (R+40.9).
Is Louisa County more Democratic or Republican than Iowa overall?+
In 2024, Louisa County went R+40.9 while Iowa overall went R+13.2 — 27.7 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.