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

8 candidates filed, 2 active for the 2026 House election in Oregon District 4. Party primary on May 19, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Val T. Hoyle D | 51.8% | 378,311 | |
| 2022 | Val Hoyle D | 50.6% | 338,587 | |
| 2020 | Peter A Defazio D | 51.6% | 467,149 | |
| 2018 | Peter Defazio D | 56.0% | 372,450 | |
| 2016 | Peter A Defazio D | 55.6% | 397,092 | |
| 2014 | Peter A Defazio D | 58.6% | 309,697 | |
| 2012 | Peter A Defazio D | 59.2% | 359,620 | |
| 2010 | Peter A Defazio D | 54.6% | 297,508 | |
| 2008 | Peter A Defazio D | 83.0% | 331,438 | |
| 2006 | Peter A Defazio D | 62.3% | 289,712 | |
| 2004 | Peter A Defazio D | 61.0% | 374,482 | |
| 2002 | Peter A Defazio D | 63.9% | 263,275 | |
| 2000 | Peter A Defazio D | 68.1% | 290,644 | |
| 1998 | Peter A Defazio D | 70.2% | 224,361 | |
| 1996 | Peter A Defazio D | 66.8% | 265,482 |