Presidential elections · 2000–2024
Seneca County, OH — Presidential Election Results (2000–2024)
In 2024, Seneca County, Ohio voted for Donald J. Trump (Republican) by R+37.5 — 7,765 Democratic to 17,241 Republican of 25,263 votes cast. From 2020 to 2024 it shifted 3.3 points toward Republicans. That makes it 26.3 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 Seneca County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 7,765 | 17,241 | 257 | 30.7% | 68.2% | R+37.5 |
| 2020 | 8,266 | 17,086 | 458 | 32.0% | 66.2% | R+34.2 |
| 2016 | 7,404 | 14,825 | 1,758 | 30.9% | 61.8% | R+30.9 |
| 2012 | 11,353 | 13,243 | 666 | 44.9% | 52.4% | R+7.5 |
| 2008 | 13,087 | 13,823 | 539 | 47.7% | 50.4% | R+2.7 |
| 2004 | 10,958 | 15,885 | 148 | 40.6% | 58.9% | R+18.3 |
| 2000 | 9,512 | 13,863 | 976 | 39.1% | 56.9% | R+17.9 |
Seneca County presidential elections — FAQ
Who carried Seneca County in the 2024 presidential election?+
Donald J. Trump (Republican) carried Seneca County, Ohio in 2024 by R+37.5, with 25,263 votes cast. Data: MIT Election Data & Science Lab.
How did Seneca County shift between 2020 and 2024?+
Seneca County shifted 3.3 points toward Republicans between 2020 (R+34.2) and 2024 (R+37.5).
Is Seneca County more Democratic or Republican than Ohio overall?+
In 2024, Seneca County went R+37.5 while Ohio overall went R+11.2 — 26.3 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.