U.S. House seat for Washington's 4th congressional district. Representatives serve two-year terms.

14 candidates filed, 2 active for the 2026 House election in Washington District 4. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Dan Newhouse R | 53.0% | 289,652 | |
| 2022 | Dan Newhouse R | 68.1% | 221,329 | |
| 2020 | Dan Newhouse R | 66.3% | 304,775 | |
| 2018 | Dan Newhouse R | 62.8% | 225,336 | |
| 2016 | Dan Newhouse R | 57.6% | 229,919 | |
| 2014 | Dan Newhouse R | 50.8% | 153,079 | |
| 2012 | Doc Hastings R | 66.2% | 233,689 | |
| 2010 | Doc Hastings R | 67.6% | 231,699 | |
| 2008 | Doc Hastings R | 63.1% | 269,370 | |
| 2006 | Doc Hastings R | 59.9% | 192,300 | |
| 2004 | Doc Hastings R | 62.6% | 247,113 | |
| 2002 | Doc Hastings R | 66.9% | 161,829 | |
| 2000 | Doc Hastings R | 60.9% | 235,104 | |
| 1998 | Doc Hastings R | 69.1% | 176,090 | |
| 1996 | Doc Hastings R | 53.0% | 205,149 |