Presidential elections · 2000–2024
Union County, OH — Presidential Election Results (2000–2024)
In 2024, Union County, Ohio voted for Donald J. Trump (Republican) by R+29.6 — 12,934 Democratic to 23,982 Republican of 37,301 votes cast. From 2020 to 2024 it shifted 1.9 points toward Democrats. That makes it 18.4 points more Republican than Ohio overall (R+11.2).
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 Union County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 12,934 | 23,982 | 385 | 34.7% | 64.3% | R+29.6 |
| 2020 | 11,141 | 21,669 | 635 | 33.3% | 64.8% | R+31.5 |
| 2016 | 7,718 | 18,096 | 1,615 | 28.1% | 66.0% | R+37.8 |
| 2012 | 8,805 | 16,289 | 473 | 34.4% | 63.7% | R+29.3 |
| 2008 | 8,761 | 15,744 | 423 | 35.1% | 63.2% | R+28.0 |
| 2004 | 6,665 | 15,869 | 96 | 29.5% | 70.1% | R+40.7 |
| 2000 | 5,040 | 11,502 | 482 | 29.6% | 67.6% | R+38.0 |
Union County presidential elections — FAQ
Who carried Union County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Union County, Ohio in 2024 by R+29.6, with 37,301 votes cast. Data: MIT Election Data & Science Lab.
How did Union County shift between 2020 and 2024?+
Union County shifted 1.9 points toward Democrats between 2020 (R+31.5) and 2024 (R+29.6).
Is Union County more Democratic or Republican than Ohio overall?+
In 2024, Union County went R+29.6 while Ohio overall went R+11.2 — 18.4 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.