February 2, 1850
Special Election
This Special Election was caused by the resignation of State Senator G. B. Post.
| SD-San Francisco | |||
| H. R. Bowie | Nonpartisan | 20.2% | Loss |
| Horace W. Carpentier | Nonpartisan | 26.5% | Loss |
| Elcan Heydenfeldt | Nonpartisan | 38.9% | Win |
| George F. James | Nonpartisan | 8.6% | Loss |
| Frank Moore | Nonpartisan | 1.1% | Loss |
| Francis B. Wright | Nonpartisan | 4.6% | Loss |
