Douglas Applegate | | Democratic | 1976 | Incumbent re-elected. | nowrap | |- ! | Ed Feighan | | Democratic | 1982 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |} Oklahoma |- ! | Jim Inhofe | | Republican | 1986 | Incumbent re-elected. | nowrap | |- ! | Mike Synar | | Democratic | 1978 | Incumbent re-elected. | nowrap | |- ! | William K. Brewster | | Democratic | 1990 | Incumbent re-elected. | nowrap | |- ! | Dave McCurdy | | Democratic | 1980 | Incumbent re-elected. | nowrap | |- ! | Mickey Edwards | | Republican | 1976 | | Incumbent lost renomination.New member elected.Republican hold. | nowrap | |- ! | Glenn English | | Democratic | 1974 | Incumbent re-elected. | nowrap | |} Oregon |- ! | Les AuCoin | | Democratic | 1974 | | Retired to run for U.S. senator.New member elected.Democratic hold. | nowrap | |- ! | Robert Freeman Smith | | Republican | 1982 | Incumbent re-elected. | nowrap | |- ! | Ron Wyden | | Democratic | 1980 | Incumbent re-elected. | nowrap | |- ! | Peter DeFazio | | Democratic | 1986 | Incumbent re-elected. | nowrap | |- ! | Michael J. Kopetski | | Democratic | 1990 | Incumbent re-elected. | nowrap | |} Pennsylvania |- ! | Thomas M. Foglietta | | Democratic | 1980 | Incumbent re-elected. | nowrap | |- ! | Lucien Blackwell | | Democratic | 1991 | Incumbent re-elected. | nowrap | |- ! | Robert A. Borski Jr. | | Democratic | 1982 | Incumbent re-elected. | nowrap | |- ! | Joseph P. Kolter | | Democratic | 1982 | | Incumbent lost renomination.New member elected.Democratic hold. | nowrap | |- ! | William F. Clinger Jr. | | Republican | 1978 | | Incumbent re-elected.Republican hold. | nowrap | |- ! | Gus Yatron | | Democratic | 1968 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! rowspan=2 | | Curt Weldon | | Republican | 1986 | Incumbent re-elected. | rowspan=2 nowrap | |- | Richard T. Schulze | | Republican | 1974 | | Incumbent retired.Republican Loss |- ! | Peter H. Kostmayer | | Democratic | 19761980 1982 | | Incumbent lost re-election.New member elected.Republican gain. | nowrap