U.S. House seat for Massachusetts's 8th congressional district. Representatives serve two-year terms.

6 candidates filed, 2 active for the 2026 House election in Massachusetts District 8. Party primary on Sep 1, 2026. General election on Nov 3, 2026.
| Year | Winner | Result | Runner-Up | Total Votes |
|---|---|---|---|---|
| 2024 | Stephen F. Lynch D | 70.6% | 376,070 | |
| 2022 | Stephen F Lynch D | 69.8% | 272,113 | |
| 2020 | Stephen F Lynch D | 81.2% | 383,000 | |
| 2018 | Stephen F Lynch D | 100.0% | 259,159 | |
| 2016 | Stephen F Lynch D | 72.5% | 373,763 | |
| 2014 | Stephen F Lynch D | 100.0% | 200,644 | |
| 2012 | Stephen F Lynch D | 76.2% | 346,241 | |
| 2010 | Michael E Capuano D | 100.0% | 134,974 | |
| 2008 | Michael E Capuano D | 100.0% | 185,530 | |
| 2006 | Michael E Capuano D | 91.0% | 137,964 | |
| 2004 | Michael E Capuano D | 100.0% | 165,852 | |
| 2002 | Michael E Capuano D | 100.0% | 111,861 | |
| 2000 | Michael E Capuano D | 100.0% | 144,031 | |
| 1998 | Michael E Capuano D | 81.8% | 121,711 | |
| 1996 | Joseph P Kennedy Ii D | 84.3% | 174,429 |