| Candidate | Party | County total | Percent, party | Percent, total |
| Barbara Boxer | Dem-Inc | 1141 | 90.48% | 35.58% |
| John Pinkerton | Dem | 120 | 9.52% | 3.74% |
| John M Brown | Rep | 37 | 2.08% | 1.15% |
| Linh Dao | Rep | 13 | 0.73% | 0.41% |
| Matt Fong | Rep | 813 | 45.67% | 25.35% |
| Darrell Issa | Rep | 433 | 24.33% | 13.50% |
| Mark Raus | Rep | 64 | 3.60% | 2.00% |
| Frank D Riggs | Rep | 420 | 23.60% | 13.10% |
| H Joseph Perrin, Sr | AI | 26 | 100.00% | 0.81% |
| Ted Brown | Lib | 61 | 100.00% | 1.90% |
| Brian M Rees | NL | 21 | 100.00% | 0.65% |
| Ophie C Beltran | P&F | 23 | 100.00% | 0.72% |
| Timothy R Erich | Rfm | 35 | 100.00% | 1.09% |
| Votes not Cast in Race | NA | 205 | NA | 6.01% |
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