U.S. House seat for California's 30th congressional district. Representatives serve two-year terms.

10 candidates filed, 2 active for the 2026 House election in California District 30. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Laura Friedman D | 68.4% | 311,659 | |
| 2022 | Adam B Schiff D | 71.1% | 211,068 | |
| 2020 | Brad Sherman D | 69.5% | 345,464 | |
| 2018 | Brad Sherman D | 73.4% | 260,993 | |
| 2016 | Brad Sherman D | 72.6% | 282,604 | |
| 2014 | Brad Sherman D | 65.6% | 131,883 | |
| 2012 | Brad Sherman D | 60.3% | 247,851 | |
| 2010 | Henry A Waxman D | 64.6% | 237,747 | |
| 2008 | Henry A Waxman D | 100.0% | 242,792 | |
| 2006 | Henry A Waxman D | 71.5% | 211,734 | |
| 2004 | Henry A Waxman D | 71.2% | 304,147 | |
| 2002 | Henry A Waxman D | 70.4% | 185,593 | |
| 2000 | Xavier Becerra D | 83.3% | 99,920 | |
| 1998 | Xavier Becerra D | 82.4% | 70,671 | |
| 1996 | Xavier Becerra D | 72.3% | 80,590 |