| | Republican | 1963 | Incumbent re-elected. | nowrap | |- ! | Mark W. Hannaford | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | James F. Lloyd | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | George Brown Jr. | | Democratic | 19621970 1972 | Incumbent re-elected. | nowrap | |- ! | Shirley Neil Pettis | | Republican | 1975 | Incumbent re-elected. | nowrap | |- ! | Jerry M. Patterson | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Charles E. Wiggins | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Andrew J. Hinshaw | | Republican | 1972 | | Lost renominationRepublican hold. | nowrap | |- ! | Bob Wilson | | Republican | 1952 | Incumbent re-elected. | nowrap | |- ! | Lionel Van Deerlin | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | Clair Burgener | | Republican | 1972 | Incumbent re-elected. | nowrap | |} Colorado |- ! | Pat Schroeder | | Democratic | 1972 | Incumbent re-elected. | nowrap | |- ! | Tim Wirth | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Frank Evans | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | James Paul Johnson | | Republican | 1972 | Incumbent re-elected. | nowrap | |- ! | William L. Armstrong | | Republican | 1972 | Incumbent re-elected. | nowrap | |} Connecticut |- ! | William R. Cotter | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Chris Dodd | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Robert Giaimo | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Stewart McKinney | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | Ronald A. Sarasin | | Republican | 1972 | Incumbent re-elected. | nowrap | |- ! | Toby Moffett | | Democratic | 1974 | Incumbent re-elected. | nowrap | |} Delaware |- ! | Pete du Pont | | Republican | 1970 | | Incumbent retired to run for Governor of Delaware.New member elected.Republican hold. | nowrap | |} Florida |- ! |