June 6, 2006
Special Election
Special Elections to fill the vacancies created by the resignations of Congressman Randy "Duke" Cunningham (CD-50) and State Senator John Campbell (SD-35).
Cunningham resigned from Congress after pleading guilty to tax evasion, conspiracy to commit bribery, mail fraud and wire fraud. Campbell resigned from the State Senate after being elected to Congress.
| CD-50 | |||
| Brian P. Bilbray | Republican | 49.6% | Win |
| Francine Busby | Democratic | 45% | Loss |
| William D. Griffith | Independent | 3.8% | Loss |
| Paul H. King | Libertarian | 1.6% | Loss |
| SD-35 | |||
| Larry Caballero | Democratic | 32.4% | Loss |
| Tom Harman | Republican | 67.6% | Win |
Primary Election
| Superintendent of Public Instruction | |||
| Daniel Bunting | Nonpartisan | 8.5% | Loss |
| Sarah L. Knopp | Nonpartisan | 17.3% | Loss |
| Diane A. Lenning | Nonpartisan | 14.3% | Loss |
| Grant M. McMicken | Nonpartisan | 7.9% | Loss |
| Jack O'Connell | Nonpartisan | 52% | Win |