Presidential elections · 2000–2024
Sonoma County, CA — Presidential Election Results (2000–2024)
In 2024, Sonoma County, California voted for Kamala D. Harris (Democratic) by D+46.2 — 179,600 Democratic to 63,426 Republican of 251,426 votes cast. From 2020 to 2024 it shifted 5.3 points toward Republicans. That makes it 26.1 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 Sonoma County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 179,600 | 63,426 | 8,400 | 71.4% | 25.2% | D+46.2 |
| 2020 | 199,938 | 61,825 | 6,554 | 74.5% | 23.0% | D+51.5 |
| 2016 | 160,435 | 51,408 | 19,410 | 69.4% | 22.2% | D+47.1 |
| 2012 | 153,942 | 54,784 | 7,782 | 71.1% | 25.3% | D+45.8 |
| 2008 | 168,888 | 55,127 | 5,336 | 73.6% | 24.0% | D+49.6 |
| 2004 | 148,261 | 68,204 | 3,612 | 67.4% | 31.0% | D+36.4 |
| 2000 | 117,295 | 63,529 | 16,182 | 59.5% | 32.2% | D+27.3 |
Sonoma County presidential elections — FAQ
Who carried Sonoma County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried Sonoma County, California in 2024 by D+46.2, with 251,426 votes cast. Data: MIT Election Data & Science Lab.
How did Sonoma County shift between 2020 and 2024?+
Sonoma County shifted 5.3 points toward Republicans between 2020 (D+51.5) and 2024 (D+46.2).
Is Sonoma County more Democratic or Republican than California overall?+
In 2024, Sonoma County went D+46.2 while California overall went D+20.1 — 26.1 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.