NBC News data shows presidential election results between the top two candidates in 2016, 2020 and 2024. Results for 2024 are preliminary.
| 2016 | 2020 | 2024 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Candidate | Hillary Clinton (D) | Donald Trump (R) | Joe Biden (D) | Donald Trump (R) | Kamala Harris (D) | Donald Trump (R) | ||||||
| California | 8,753,788 | 62.3% | 4,483,810 | 31.9% | 11,110,250 | 63.50% | 6,006,429 | 34.3% | 5,613,061 | 57.3% | 3,930,296 | 40.1% |
| San Diego County | 567,243 | 56% | 386,607 | 38% | 964,650 | 60.20% | 600,094 | 37.5% | 535,130 | 55.7% | 403,378 | 42% |