Columns: District | Incumbent | Party | First elected | Result | Candidates
Massachusetts 1 | Richard Neal Redistricted from the 2nd district | Democratic | 1988 | Re-elected | Richard Neal (D) | Massachusetts 2 | John Olver Redistricted from the 1st district | Democratic | 1991 (Special) | Retired Democratic loss | Jim McGovern (D) | Massachusetts 2 | Jim McGovern Redistricted from the 3rd district | Democratic | 1996 | Re-elected | Jim McGovern (D) | Massachusetts 3 | Niki Tsongas Redistricted from the 5th district | Democratic | 2007 (Special) | Re-elected | Niki Tsongas (D) 65.9% Jon Golnik (R) 34.1% | Massachusetts 4 | Barney Frank | Democratic | 1980 | Retired Democratic hold | Joseph Kennedy III (D) 61.1% Sean Bielat (R) 36.0% | Massachusetts 5 | Ed Markey Redistricted from the 7th district | Democratic | 1976 | Re-elected | Ed Markey (D) 75.5% Tom Tierney (R) 24.5% | Massachusetts 7 | Mike Capuano Redistricted from the 8th district | Democratic | 1998 | Re-elected | Mike Capuano (D) 83.6% Karla Romero (I) 16.4%