U.S. House seat for California's 15th congressional district. Representatives serve two-year terms.

7 candidates filed, 2 active for the 2026 House election in California District 15. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Kevin Mullin D | 73.1% | 289,544 | |
| 2022 | Kevin Mullin D | 55.5% | 194,874 | |
| 2020 | Eric Swalwell D | 70.9% | 342,701 | |
| 2018 | Eric Swalwell D | 73.0% | 243,929 | |
| 2016 | Eric Swalwell D | 73.8% | 269,197 | |
| 2014 | Eric Swalwell D | 69.8% | 142,906 | |
| 2012 | Eric Swalwell D | 52.1% | 231,034 | |
| 2010 | Michael M Honda D | 67.6% | 186,615 | |
| 2008 | Michael M Honda D | 71.7% | 238,589 | |
| 2006 | Michael M Honda D | 72.3% | 159,718 | |
| 2004 | Michael M Honda D | 72.0% | 214,338 | |
| 2002 | Michael M Honda D | 65.8% | 133,022 | |
| 2000 | Mike Honda D | 54.3% | 236,822 | |
| 1998 | Tom Campbell R | 60.5% | 184,778 | |
| 1996 | Tom Campbell R | 58.5% | 226,868 |