| 1966 | Incumbent re-elected. | nowrap | |- ! | R. James Harvey | | Republican | 1960 | Incumbent re-elected. | nowrap | |- ! | Guy Vander Jagt | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Elford Albin Cederberg | | Republican | 1952 | Incumbent re-elected. | nowrap | |- ! | Philip Ruppe | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | James G. O'Hara | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Charles Diggs | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | Lucien Nedzi | | Democratic | 1961 | Incumbent re-elected. | nowrap | |- ! | William D. Ford | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | John D. Dingell Jr. | | Democratic | 1955 | Incumbent re-elected. | nowrap | |- ! | Martha Griffiths | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | colspan=3 | None (district created) | | New seat.New member elected.Republican gain. | nowrap | |- ! rowspan=2 | | Jack H. McDonald | | Republican | 1966 | | Incumbent lost renomination.Republican loss. | rowspan=2 nowrap | |- | William Broomfield | | Republican | 1956 | Incumbent re-elected. |} Minnesota |- ! | Al Quie | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | Ancher Nelsen | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | Bill Frenzel | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | Joseph Karth | | | 1958 | Incumbent re-elected. | nowrap | |- ! | Donald M. Fraser | | | 1962 | Incumbent re-elected. | nowrap | |- ! | John M. Zwach | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Robert Bergland | | | 1970 | Incumbent re-elected. | nowrap | |- ! | John Blatnik | | | 1946 | Incumbent re-elected. | nowrap | |} Mississippi |- ! | Jamie Whitten | | Democratic | 1941 | Incumbent re-elected. | nowrap | |- ! | Thomas Abernethy | | Democratic | 1942 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Sonny Montgomery |