| Candidate | Party | County total | Percent, party | Percent, total |
| Barbara Boxer | Dem-Inc | 1608 | 71.63% | 21.56% |
| John Pinkerton | Dem | 637 | 28.37% | 8.54% |
| John M Brown | Rep | 61 | 1.25% | 0.82% |
| Linh Dao | Rep | 41 | 0.84% | 0.55% |
| Matt Fong | Rep | 2261 | 46.20% | 30.32% |
| Darrell Issa | Rep | 1809 | 36.96% | 24.26% |
| Mark Raus | Rep | 117 | 2.39% | 1.57% |
| Frank D Riggs | Rep | 605 | 12.36% | 8.11% |
| H Joseph Perrin, Sr | AI | 59 | 100.00% | 0.79% |
| Ted Brown | Lib | 116 | 100.00% | 1.56% |
| Brian M Rees | NL | 40 | 100.00% | 0.54% |
| Ophie C Beltran | P&F | 46 | 100.00% | 0.62% |
| Timothy R Erich | Rfm | 58 | 100.00% | 0.78% |
| Votes not Cast in Race | NA | 352 | NA | 4.51% |
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