| rowspan=2 | | Harold M. Ryan | | Democratic | 1962 | | Incumbent lost renomination.Democratic loss. | rowspan=2 nowrap | |- | Lucien NedziRedistricted from 1st | | Democratic | 1961 | Incumbent re-elected. |- | | colspan=3 | None (District created) | | New seat.New member elected.Democratic gain. | nowrap | |- | rowspan=2 | | John Lesinski Jr. | | Democratic | 1950 | | Incumbent lost renomination.Democratic loss. | rowspan=2 nowrap | |- | John D. Dingell Jr.Redistricted from 15th | | Democratic | 1955 | Incumbent re-elected. |- | | Martha Griffiths | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- | | William Broomfield | | Republican | 1956 | Incumbent re-elected. | nowrap | |- | | Neil StaeblerRedistricted from at-large | | Democratic | 1962 | | Incumbent retired to run for Governor of Michigan.New member elected.Democratic hold. | nowrap | |} Minnesota |- | | Al Quie | | Republican | 1958 | Incumbent re-elected. | nowrap | |- | | Ancher Nelsen | | Republican | 1958 | Incumbent re-elected. | nowrap | |- | | Clark MacGregor | | Republican | 1960 | Incumbent re-elected. | nowrap | |- | | Joseph Karth | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- | | Donald M. Fraser | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- | | Alec G. Olson | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- | | Odin Langen | | Republican | 1958 | Incumbent re-elected. | nowrap | |- | | John Blatnik | | Democratic | 1946 | Incumbent re-elected. | nowrap | |} Mississippi |- | | Thomas Abernethy | | Democratic | 1942 | Incumbent re-elected. | nowrap | |- | | Jamie Whitten | | Democratic | 1941 | Incumbent re-elected. | nowrap | |- | | John Bell Williams | | Democratic | 1946 | Incumbent re-elected. | nowrap | |- | | W. Arthur Winstead | | Democratic | 1942 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |- | | William M. Colmer | | Democratic | 1932 | Incumbent re-elected. | nowrap | |} Missouri |- | | Frank M. Karsten | | Democratic | 1946 | Incumbent re-elected. | nowrap | |- | | Thomas B. Curtis