Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | John Duncan Sr. | | Republican | 1964 | Incumbent re-elected. | nowrap | |- ! | Bill Brock | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | Joe L. Evins | | Democratic | 1946 | Incumbent re-elected. | nowrap | |- ! | Richard Fulton | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | William Anderson | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Tom J. Murray | | Democratic | 1942 | | Incumbent lost renomination.New member elected.Democratic hold. | nowrap | |- ! | Fats Everett | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | George W. Grider | | Democratic | 1964 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap | |} Texas Texas redistricted for this election, eliminating its at-large district and removing two East Texas districts in favor of adding three districts in South Texas, suburban Houston, and suburban Dallas. |- ! | Wright Patman | | Democratic | 1928 | Incumbent re-elected. | nowrap | |- ! | John Dowdy | | Democratic | 1952 | Incumbent re-elected. | nowrap | |- ! | Joe R. Pool | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! rowspan=2 | | Ray Roberts | | Democratic | 1962 | Incumbent re-elected. | rowspan=2 nowrap | |- | Lindley Beckworth | | Democratic | 1956 | | Incumbent lost renomination.Democratic loss. |- ! | Earle Cabell | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Olin E. Teague | | Democratic | 1946 | Incumbent re-elected. | nowrap | |- ! | colspan=3 | None (District created) | | New seat.New member elected.Republican gain. | nowrap | |- ! | Lera Millard Thomas | | Democratic | 1966 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! rowspan=2 | | Jack Brooks | | Democratic | 1952 | Incumbent re-elected. | rowspan=2 nowrap | |- | Clark W. Thompson | | Democratic | 1947 | | Incumbent retired.Democratic loss. |- ! | J. J. Pickle | | Democratic | 1963 | Incumbent re-elected. | nowrap | |- ! | William R. Poage | | Democratic | 1936 |