created) | | New seat.New member elected.Republican gain. | nowrap | |- ! | Lawrence Hogan | | Republican | 1968 | Incumbent re-elected. | nowrap | |- ! | Goodloe Byron | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Parren Mitchell | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Gilbert Gude | | Republican | 1966 | Incumbent re-elected. | nowrap | |} Massachusetts |- ! | Silvio O. Conte | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | Edward Boland | | Democratic | 1952 | Incumbent re-elected. | nowrap | |- ! | Harold Donohue | | Democratic | 1946 | Incumbent re-elected. | nowrap | |- ! | Robert Drinan | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | F. Bradford Morse | | Republican | 1960 | | Resigned when appointed to United NationsRepublican hold. | nowrap | |- ! | Michael J. Harrington | | Democratic | 1969 | Incumbent re-elected. | nowrap | |- ! | Torbert Macdonald | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | Tip O'Neill | | Democratic | 1952 | Incumbent re-elected. | nowrap | |- ! | Louise Day Hicks | | Democratic | 1970 | | Incumbent lost re-election.New member elected.Independent Democratic gain. | nowrap | |- ! | Margaret Heckler | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | James A. Burke | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Hastings Keith | | Republican | 1958 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |} Michigan |- ! | John Conyers | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Marvin L. Esch | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Garry E. Brown | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | J. Edward Hutchinson | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | Gerald Ford | | Republican | 1948 | Incumbent re-elected. | nowrap | |- ! | Charles E. Chamberlain | | Republican | 1956 | Incumbent re-elected. | nowrap | |- ! | Donald Riegle | | Republican