| Candidate | Party | County total | Percent, party | Percent, total |
| Barbara Boxer | Dem-Inc | 81080 | 94.05% | 56.08% |
| John Pinkerton | Dem | 5126 | 5.95% | 3.55% |
| John M Brown | Rep | 995 | 1.85% | 0.69% |
| Linh Dao | Rep | 323 | 0.60% | 0.22% |
| Matt Fong | Rep | 33043 | 61.40% | 22.86% |
| Darrell Issa | Rep | 10053 | 18.68% | 6.95% |
| Mark Raus | Rep | 844 | 1.57% | 0.58% |
| Frank D Riggs | Rep | 8555 | 15.90% | 5.92% |
| H Joseph Perrin, Sr | AI | 456 | 100.00% | 0.32% |
| Ted Brown | Lib | 1681 | 100.00% | 1.16% |
| Brian M Rees | NL | 565 | 100.00% | 0.39% |
| Ophie C Beltran | P&F | 855 | 100.00% | 0.59% |
| Timothy R Erich | Rfm | 995 | 100.00% | 0.69% |
| Votes not Cast in Race | NA | 6396 | NA | 4.24% |
Return to RAND California 1998 Primary Election: U.S. Senate
Return to RAND California 1998 Primary Election Returns
Return to RAND California Home Page