| Candidate | Party | County total | Percent, party | Percent, total |
| Diane Feinstein | Dem-Inc | 1826 | 88.6% | 30.6% |
| Michael Schmier | Dem | 235 | 11.4% | 4.0% |
| Ray Haynes | Rep | 1170 | 33.5% | 19.7% |
| John M. Brown | Rep | 51 | 1.4% | 0.8% |
| Linh Dao | Rep | 36 | 1.0% | 0.6% |
| Tom Campbell | Rep | 1135 | 32.5% | 19.1% |
| Bill Horn | Rep | 1068 | 30.5% | 18.0% |
| James Peter Gough | Rep | 41 | 1.1% | 0.6% |
| Diane Beall Templin | AI | 55 | 100.0% | 1.0% |
| Jan B. Tucker | Grn | 32 | 34.4% | 0.5% |
| Medea Susan Benjamin | Grn | 61 | 65.6% | 1.1% |
| Gail Katherine Lightfoot | Lib | 169 | 100.0% | 2.9% |
| Brian M. Rees | NL | 23 | 100.0% | 0.3% |
| Jose Luis Camahort | Ref | 21 | 51.3% | 0.3% |
| Valli Sharpe-Geisler | Ref | 20 | 48.7% | 0.3% |
| Votes not Cast in Race | NA | 455 | NA | 7.11% |
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Election: U.S. Senate
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