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

9 candidates filed, 2 active for the 2026 House election in Arizona District 4. Party primary on Jul 21, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Greg Stanton D | 52.7% | 334,545 | |
| 2022 | Greg Stanton D | 56.1% | 265,462 | |
| 2020 | Paul A Gosar R | 69.7% | 398,623 | |
| 2018 | Paul Gosar R | 68.2% | 277,035 | |
| 2016 | Paul A Gosar R | 71.5% | 284,783 | |
| 2014 | Paul A Gosar R | 70.0% | 175,179 | |
| 2012 | Paul A Gosar R | 66.8% | 243,760 | |
| 2010 | Ed Pastor D | 66.9% | 91,907 | |
| 2008 | Ed Pastor D | 72.1% | 124,427 | |
| 2006 | Ed Pastor D | 75.2% | 75,091 | |
| 2004 | Ed Pastor D | 70.1% | 110,027 | |
| 2002 | Ed Pastor D | 67.4% | 66,065 | |
| 2000 | John B Shadegg R | 64.0% | 219,497 | |
| 1998 | John B Shadegg R | 64.7% | 158,822 | |
| 1996 | John B Shadegg R | 66.8% | 225,343 |