U.S. House seat for Arizona's 1st congressional district. Representatives serve two-year terms.

23 candidates filed, 3 active for the 2026 House election in Arizona District 1. Party primary on Jul 21, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | David Schweikert R | 51.9% | 434,504 | |
| 2022 | David Schweikert R | 50.4% | 361,477 | |
| 2020 | Tom O'Halleran D | 51.6% | 365,178 | |
| 2018 | Tom O'Halleran D | 53.8% | 266,024 | |
| 2016 | Tom O'Halleran D | 50.7% | 280,710 | |
| 2014 | Ann Kirkpatrick D | 52.6% | 185,114 | |
| 2012 | Ann Kirkpatrick D | 48.8% | 251,595 | |
| 2010 | Paul Gosar R | 49.7% | 226,918 | |
| 2008 | Ann Kirkpatrick D | 55.9% | 278,787 | |
| 2006 | Rick Renzi R | 51.8% | 204,139 | |
| 2004 | Rick Renzi R | 58.5% | 253,351 | |
| 2002 | Rick Renzi R | 49.2% | 174,687 | |
| 2000 | Jeff Flake R | 53.6% | 229,971 | |
| 1998 | Matt Salmon R | 64.6% | 152,948 | |
| 1996 | Matt Salmon R | 60.2% | 225,372 |