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

20 candidates filed, 2 active for the 2026 House election in New Hampshire District 1. Party primary on Sep 8, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Chris Pappas D | 54.0% | 404,513 | |
| 2022 | Chris Pappas D | 54.1% | 309,620 | |
| 2020 | Chris Pappas D | 51.3% | 400,512 | |
| 2018 | Chris Pappas D | 53.6% | 290,928 | |
| 2016 | Carol Shea-Porter D | 44.3% | 365,572 | |
| 2014 | Frank C Guinta R | 51.8% | 242,277 | |
| 2012 | Carol Shea-Porter D | 49.8% | 344,830 | |
| 2010 | Frank C Guinta R | 54.0% | 225,124 | |
| 2008 | Carol Shea-Porter D | 51.8% | 340,873 | |
| 2006 | Carol Shea-Porter D | 51.3% | 196,218 | |
| 2004 | Jeb Bradley R | 63.4% | 323,062 | |
| 2002 | Jeb Bradley R | 58.2% | 221,806 | |
| 2000 | John E Sununu R | 52.9% | 284,709 | |
| 1998 | John E Sununu R | 66.9% | 156,213 | |
| 1996 | John E Sununu R | 50.1% | 247,577 |