U.S. House seat for California's 20th congressional district. Representatives serve two-year terms.

6 candidates filed, 2 active for the 2026 House election in California District 20. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Vince Fong R | 65.1% | 288,788 | |
| 2022 | Kevin Mccarthy R | 67.2% | 228,781 | |
| 2020 | Jimmy Panetta D | 76.8% | 308,554 | |
| 2018 | Jimmy Panetta D | 81.4% | 225,721 | |
| 2016 | Jimmy Panetta D | 70.8% | 255,791 | |
| 2014 | Sam Farr D | 75.2% | 141,044 | |
| 2012 | Sam Farr D | 74.1% | 233,562 | |
| 2010 | Jim Costa D | 51.7% | 89,444 | |
| 2008 | Jim Costa D | 74.3% | 125,141 | |
| 2006 | Jim Costa D | 100.0% | 61,120 | |
| 2004 | Jim Costa D | 53.4% | 114,236 | |
| 2002 | Calvin M Dooley D | 63.7% | 74,770 | |
| 2000 | Calvin M Dooley D | 52.3% | 126,534 | |
| 1998 | Calvin M Dooley D | 60.7% | 99,782 | |
| 1996 | Calvin M Dooley D | 56.5% | 115,705 |