List of special elections in California to the United States House of Representatives List of special elections List of special elections

| District | Congress | Date_ | Predecessor | Winner |
|---|---|---|---|---|
| 5 | 109th | March 8, 2005 | Bob Matsui ( D ) | Doris Matsui ( D ) |
| 48 | 109th | December 6, 2005 | Christopher Cox ( R ) | John Campbell ( R ) |
| 50 | 109th | June 6, 2006 | Duke Cunningham ( R ) | Brian Bilbray ( R ) |
| 37 | 110th | August 21, 2007 | Juanita Millender-McDonald ( D ) | Laura Richardson ( D ) |
| 12 | 110th | April 8, 2008 | Tom Lantos ( D ) | Jackie Speier ( D ) |
| 32 | 111th | July 14, 2009 | Hilda Solis ( D ) | Judy Chu ( D ) |
| 10 | 111th | November 3, 2009 | Ellen Tauscher ( D ) | John Garamendi ( D ) |
| 36 | 112th | TBD | Jane Harman ( D ) | Janice Hahn ( D ) |