Presidential elections · 2000–2024
Solano County, CA — Presidential Election Results (2000–2024)
In 2024, Solano County, California voted for Kamala D. Harris (Democratic) by D+23.0 — 113,997 Democratic to 70,345 Republican of 189,834 votes cast. From 2020 to 2024 it shifted 7.3 points toward Republicans. That makes it 2.9 points more Democratic than California overall (D+20.1).
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 Solano County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 113,997 | 70,345 | 5,492 | 60.1% | 37.1% | D+23.0 |
| 2020 | 131,639 | 69,306 | 4,932 | 63.9% | 33.7% | D+30.3 |
| 2016 | 102,360 | 51,920 | 11,833 | 61.6% | 31.3% | D+30.4 |
| 2012 | 96,783 | 52,092 | 3,569 | 63.5% | 34.2% | D+29.3 |
| 2008 | 102,095 | 56,035 | 2,843 | 63.4% | 34.8% | D+28.6 |
| 2004 | 85,096 | 62,301 | 1,349 | 57.2% | 41.9% | D+15.3 |
| 2000 | 75,116 | 51,604 | 5,015 | 57.0% | 39.2% | D+17.8 |
Solano County presidential elections — FAQ
Who carried Solano County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Solano County, California in 2024 by D+23.0, with 189,834 votes cast. Data: MIT Election Data & Science Lab.
How did Solano County shift between 2020 and 2024?+
Solano County shifted 7.3 points toward Republicans between 2020 (D+30.3) and 2024 (D+23.0).
Is Solano County more Democratic or Republican than California overall?+
In 2024, Solano County went D+23.0 while California overall went D+20.1 — 2.9 points more Democratic 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.