| Candidate | Party | County total | Percent, party | Percent, total |
| Barbara Boxer | Dem-Inc | 893 | 78.47% | 26.62% |
| John Pinkerton | Dem | 245 | 21.53% | 7.30% |
| John M Brown | Rep | 42 | 2.07% | 1.25% |
| Linh Dao | Rep | 21 | 1.04% | 0.63% |
| Matt Fong | Rep | 795 | 39.20% | 23.70% |
| Darrell Issa | Rep | 544 | 26.82% | 16.21% |
| Mark Raus | Rep | 104 | 5.13% | 3.10% |
| Frank D Riggs | Rep | 522 | 25.74% | 15.56% |
| H Joseph Perrin, Sr | AI | 45 | 100.00% | 1.34% |
| Ted Brown | Lib | 52 | 100.00% | 1.55% |
| Brian M Rees | NL | 38 | 100.00% | 1.13% |
| Ophie C Beltran | P&F | 15 | 100.00% | 0.45% |
| Timothy R Erich | Rfm | 39 | 100.00% | 1.16% |
| Votes not Cast in Race | NA | 242 | NA | 6.73% |
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