U.S. House seat for Connecticut's 3rd congressional district. Representatives serve two-year terms.

5 candidates filed, 2 active for the 2026 House election in Connecticut District 3. Party primary on Aug 11, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Rosa L. Delauro D | 58.9% | 328,797 | |
| 2022 | Rosa L Delauro D | 56.8% | 242,651 | |
| 2020 | Rosa L Delauro D | 94.5% | 205,529 | |
| 2018 | Rosa L Delauro D | 63.0% | 258,878 | |
| 2016 | Rosa L Delauro D | 66.7% | 288,060 | |
| 2014 | Rosa L Delauro D | 65.2% | 199,463 | |
| 2012 | Rosa L Delauro D | 72.8% | 270,889 | |
| 2010 | Rosa L Delauro D | 63.6% | 211,635 | |
| 2008 | Rosa L Delauro D | 75.3% | 271,957 | |
| 2006 | Rosa L Delauro D | 76.0% | 197,911 | |
| 2004 | Rosa L Delauro D | 72.4% | 276,980 | |
| 2002 | Rosa L Delauro D | 65.6% | 185,364 | |
| 2000 | Rosa L Delauro D | 71.9% | 218,205 | |
| 1998 | Rosa L Delauro D | 71.3% | 153,851 | |
| 1996 | Rosa L Delauro D | 69.4% | 197,662 |