San Diego County, California
Votes
Percentages
| Year | Democrat | Republican | Other | Total | |||
|---|---|---|---|---|---|---|---|
| 2000 | 437,666 | 45.7% | 475,736 | 49.6% | 45,232 | 4.7% | 958,634 |
| 2004 | 526,437 | 46.4% | 596,033 | 52.6% | 11,114 | 1.0% | 1,133,584 |
| 2008 | 666,581 | 54.1% | 541,032 | 43.9% | 23,434 | 1.9% | 1,231,047 |
| 2012 | 626,957 | 52.6% | 536,726 | 45.0% | 28,599 | 2.4% | 1,192,282 |
| 2016 | 735,476 | 56.3% | 477,766 | 36.6% | 93,158 | 7.1% | 1,306,400 |
| 2020 | 964,650 | 60.2% | 600,094 | 37.5% | 37,399 | 2.3% | 1,602,143 |