Presidential elections · 2000–2024
San Diego County, CA — Presidential Election Results (2000–2024)
In 2024, San Diego County, California voted for Kamala D. Harris (Democratic) by D+16.8 — 841,372 Democratic to 593,270 Republican of 1,477,786 votes cast. From 2020 to 2024 it shifted 6.0 points toward Republicans. That makes it 3.3 points more Republican 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 San Diego County
| Year | Democratic | Republican | Other | Dem share | Rep share | Margin |
|---|---|---|---|---|---|---|
| 2024 | 841,372 | 593,270 | 43,144 | 56.9% | 40.1% | D+16.8 |
| 2020 | 964,650 | 600,094 | 37,399 | 60.2% | 37.5% | D+22.8 |
| 2016 | 735,476 | 477,766 | 93,158 | 56.3% | 36.6% | D+19.7 |
| 2012 | 626,957 | 536,726 | 28,599 | 52.6% | 45.0% | D+7.6 |
| 2008 | 666,581 | 541,032 | 23,434 | 54.1% | 43.9% | D+10.2 |
| 2004 | 526,437 | 596,033 | 11,114 | 46.4% | 52.6% | R+6.1 |
| 2000 | 437,666 | 475,736 | 45,232 | 45.7% | 49.6% | R+4.0 |
San Diego County presidential elections — FAQ
Who carried San Diego County in the 2024 presidential election?+
Kamala D. Harris (Democratic) carried San Diego County, California in 2024 by D+16.8, with 1,477,786 votes cast. Data: MIT Election Data & Science Lab.
How did San Diego County shift between 2020 and 2024?+
San Diego County shifted 6.0 points toward Republicans between 2020 (D+22.8) and 2024 (D+16.8).
Is San Diego County more Democratic or Republican than California overall?+
In 2024, San Diego County went D+16.8 while California overall went D+20.1 — 3.3 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.