U.S. House seat · former district
Massachusetts's 10th District
18 elections since 1976: Democrats won 15, Republicans 3.
2010 election
Nov 2, 2010- Bill Keating (D) · won46.9%
- Jeffrey Davis Perry (R)42.4%
- Maryanne Lewis (IND)5.9%
- James A. Sheets (IND)3.7%
Source: MIT Election Data and Science LabUpdated Sep 30, 2026, 7:25 AM ET
Every election for this seat
18 races since 1976. District numbers are redrawn after each census: each group is one set of lines.
| Year | Winner | Runner-up | Won by |
|---|---|---|---|
| Lines first used in 2002 | |||
| 2010 | Bill Keating (D) | Jeffrey Davis Perry (R) | 4.5 |
| 2008 | William Delahunt (D) | — | Unopposed |
| 2006 | William Delahunt (D) | Jeffrey K. Beatty (R) | 34.9 |
| 2004 | William Delahunt (D) | Michael J. Jones (R) | 31.8 |
| 2002 | William Delahunt (D) | Luis Gonzaga (R) | 38.5 |
| Lines first used in 1992 | |||
| 2000 | William Delahunt (D) | Eric V. Bleicken (R) | 48.5 |
| 1998 | William Delahunt (D) | Eric V. Bleicken (R) | 40.1 |
| 1996 | William Delahunt (D) | Edward B. Teague III (R) | 12.6 |
| 1994 | Gerry Studds (D) | Keith Jason Hemeon (R) | 37.5 |
| 1992 | Gerry Studds (D) | Daniel W. Daly (R) | 36.4 |
| Lines first used in 1982 | |||
| 1990 | Gerry Studds (D) | Jon L. Bryan (R) | 6.6 |
| 1988 | Gerry Studds (D) | Jon L. Bryan (R) | 33.3 |
| 1986 | Gerry Studds (D) | Ricardo M. Barros (R) | 37.2 |
| 1984 | Gerry Studds (D) | Lewis Crampton (R) | 11.4 |
| 1982 | Gerry Studds (D) | John E. Conway (R) | 37.4 |
| Lines first used in 1972 | |||
| 1980 | Margaret M. Heckler (R) | Robert E. McCarthy (D) | 21.2 |
| 1978 | Margaret M. Heckler (R) | John J. Marino (D) | 22.3 |
| 1976 | Margaret M. Heckler (R) | — | Unopposed |
Won by: the winner's lead over the runner-up, in points of the vote. Source: 99chambers results archive (MEDSL, Klarner, state election offices)