| Candidate | Party | County total | Percent, party | Percent, total |
| Diane Feinstein | Dem-Inc | 570 | 93.3% | 36.4% |
| Michael Schmier | Dem | 41 | 6.7% | 2.7% |
| Ray Haynes | Rep | 250 | 29.9% | 16.0% |
| John M. Brown | Rep | 9 | 1.1% | 0.5% |
| Linh Dao | Rep | 5 | 0.5% | 0.3% |
| Tom Campbell | Rep | 290 | 34.7% | 18.5% |
| Bill Horn | Rep | 277 | 33.1% | 17.7% |
| James Peter Gough | Rep | 6 | 0.7% | 0.3% |
| Diane Beall Templin | AI | 13 | 100.0% | 0.8% |
| Jan B. Tucker | Grn | 10 | 43.4% | 0.6% |
| Medea Susan Benjamin | Grn | 13 | 56.6% | 0.9% |
| Gail Katherine Lightfoot | Lib | 56 | 100.0% | 3.6% |
| Brian M. Rees | NL | 10 | 100.0% | 0.6% |
| Jose Luis Camahort | Ref | 13 | 68.5% | 0.8% |
| Valli Sharpe-Geisler | Ref | 6 | 31.5% | 0.3% |
| Votes not Cast in Race | NA | 99 | NA | 5.94% |
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Election: U.S. Senate
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