| Democratic | 1974 | Incumbent re-elected. | rowspan=2 nowrap | |- | Donald A. Bailey | | Democratic | 1978 | | Incumbent lost renomination.Democratic loss. |- ! | R. Lawrence Coughlin | | Republican | 1968 | Incumbent re-elected. | nowrap | |- ! | William J. Coyne | | Democratic | 1980 | Incumbent re-elected. | nowrap | |- ! | Donald L. Ritter | | Republican | 1978 | Incumbent re-elected. | nowrap | |- ! | Robert Smith Walker | | Republican | 1976 | Incumbent re-elected. | nowrap | |- ! | Allen E. Ertel | | Democratic | 1976 | | Incumbent retired to run for Governor of Pennsylvania.New member elected.Republican gain. | nowrap | |- ! | Doug Walgren | | Democratic | 1976 | Incumbent re-elected. | nowrap | |- ! | William F. Goodling | | Republican | 1974 | Incumbent re-elected. | nowrap | |- ! | Joseph M. Gaydos | | Democratic | 1968 | Incumbent re-elected. | nowrap | |- ! | Marc L. Marks | | Republican | 1976 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Austin Murphy | | Democratic | 1976 | Incumbent re-elected. | nowrap | |- ! | William F. Clinger Jr. | | Republican | 1978 | Incumbent re-elected. | nowrap | |} Rhode Island |- ! | Fernand St. Germain | | Democratic | 1960 | Incumbent re-elected. | nowrap | |- ! | Claudine Schneider | | Republican | 1980 | Incumbent re-elected. | nowrap | |} South Carolina |- ! | Thomas F. Hartnett | | Republican | 1980 | Incumbent re-elected. | nowrap | |- ! | Floyd Spence | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | Butler Derrick | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Carroll A. Campbell Jr. | | Republican | 1978 | Incumbent re-elected. | nowrap | |- ! | Kenneth Lamar Holland | | Democratic | 1974 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | John Light Napier | | Republican | 1980 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |} South Dakota |- ! rowspan=2 | | Tom Daschle | | Democratic | 1978 | Incumbent re-elected. | rowspan=2 nowrap | |- |