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

7 candidates filed, 2 active for the 2026 House election in Illinois District 1. Party primary on Mar 17, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Jonathan L. Jackson D | 65.9% | 316,462 | |
| 2022 | Jonathan L Jackson D | 67.0% | 237,400 | |
| 2020 | Bobby L Rush D | 73.8% | 325,123 | |
| 2018 | Bobby L Rush D | 73.5% | 257,885 | |
| 2016 | Bobby L Rush D | 74.1% | 315,854 | |
| 2014 | Bobby L Rush D | 73.1% | 222,017 | |
| 2012 | Bobby L Rush D | 73.8% | 320,843 | |
| 2010 | Bobby L Rush D | 80.4% | 184,386 | |
| 2008 | Bobby L Rush D | 85.9% | 271,397 | |
| 2006 | Bobby L Rush D | 84.1% | 174,427 | |
| 2004 | Bobby L Rush D | 84.9% | 249,949 | |
| 2002 | Bobby L Rush D | 81.2% | 183,656 | |
| 2000 | Bobby L Rush D | 87.8% | 196,186 | |
| 1998 | Bobby L Rush D | 87.1% | 174,365 | |
| 1996 | Bobby L Rush D | 85.7% | 203,113 |