April 10, 1990
Special Election
Special Elections to fill the seats vacated by State Senators Joseph Montoya (SD-26) and William P. Campbell (SD-31). Senator Montoya resigned after being convicted for extortion, racketeering, and money laundering. Senator Campbell Senator resigned to become President of the California Manufacturers Association (CMA).
| SD-26 | |||
| Charles M. Calderon | Democratic | 68.1% | Win |
| Kim J. Goldsworthy | Libertarian | 4.8% | Loss |
| Richard S. Gonzales | Write-in | Loss | |
| Joe A. Urguidi | Republican | 27.1% | Loss |
| SD-31 | |||
| Janice Lynn Graham | Democratic | 35.7% | Loss |
| Frank Hill | Republican | 60.9% | Win |
| Robert W. Lewis | American Independent | 3.4% | Loss |