| Candidate | Party | County total | Percent, party | Percent, total |
| Barbara Boxer | Dem-Inc | 219 | 89.39% | 41.17% |
| John Pinkerton | Dem | 26 | 10.61% | 4.89% |
| John M Brown | Rep | 2 | 0.78% | 0.38% |
| Linh Dao | Rep | 1 | 0.39% | 0.19% |
| Matt Fong | Rep | 112 | 43.92% | 21.05% |
| Darrell Issa | Rep | 74 | 29.02% | 13.91% |
| Mark Raus | Rep | 7 | 2.75% | 1.32% |
| Frank D Riggs | Rep | 59 | 23.14% | 11.09% |
| H Joseph Perrin, Sr | AI | 6 | 100.00% | 1.13% |
| Ted Brown | Lib | 6 | 100.00% | 1.13% |
| Brian M Rees | NL | 7 | 100.00% | 1.32% |
| Ophie C Beltran | P&F | 6 | 100.00% | 1.13% |
| Timothy R Erich | Rfm | 7 | 100.00% | 1.32% |
| Votes not Cast in Race | NA | 33 | NA | 5.84% |
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