U.S. House seat for California's 9th congressional district. Representatives serve two-year terms.

6 candidates filed, 2 active for the 2026 House election in California District 9. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Josh Harder D | 51.8% | 251,357 | |
| 2022 | Josh Harder D | 54.8% | 174,400 | |
| 2020 | Jerry Mcnerney D | 57.6% | 302,610 | |
| 2018 | Jerry Mcnerney D | 56.5% | 200,763 | |
| 2016 | Jerry Mcnerney D | 57.4% | 232,155 | |
| 2014 | Jerry Mcnerney D | 52.4% | 121,204 | |
| 2012 | Jerry Mcnerney D | 55.6% | 213,077 | |
| 2010 | Barbara Lee D | 84.3% | 214,085 | |
| 2008 | Barbara Lee D | 86.1% | 277,536 | |
| 2006 | Barbara Lee D | 86.3% | 193,686 | |
| 2004 | Barbara Lee D | 84.5% | 255,039 | |
| 2002 | Barbara Lee D | 81.4% | 166,911 | |
| 2000 | Barbara Lee D | 85.0% | 214,650 | |
| 1998 | Barbara Lee D | 82.8% | 169,895 | |
| 1996 | Ronald V Dellums D | 77.0% | 200,968 |