nowrap | |- ! | Louis Stokes | | Democratic | 1968 | Incumbent re-elected. | nowrap | |- ! | Charles Vanik | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | Ronald M. Mottl | | Democratic | 1974 | Incumbent re-elected. | nowrap | |} Oklahoma |- ! | James R. Jones | | Democratic | 1972 | Incumbent re-elected. | nowrap | |- ! | Ted Risenhoover | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Carl Albert | | Democratic | 1946 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Tom Steed | | Democratic | 1948 | Incumbent re-elected. | nowrap | |- ! | John Jarman | | Republican | 1950 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Glenn English | | Democratic | 1974 | Incumbent re-elected. | nowrap | |} Oregon |- ! | Les AuCoin | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Al Ullman | | Democratic | 1956 | Incumbent re-elected. | nowrap | |- ! | Robert B. Duncan | | Democratic | 19621966 1974 | Incumbent re-elected. | nowrap | |- ! | Jim Weaver | | Democratic | 1974 | Incumbent re-elected. | nowrap | |} Pennsylvania |- ! | William A. Barrett | | Democratic | 19441946 1948 | | Incumbent died.New member elected.Democratic hold. | nowrap | |- ! | Robert N. C. Nix Sr. | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | William J. Green III | | Democratic | 1964 | | Incumbent retired to run for U.S. senator.New member elected.Democratic hold. | nowrap | |- ! | Joshua Eilberg | | Democratic | 1966 | Incumbent re-elected. | nowrap | |- ! | Richard T. Schulze | | Republican | 1974 | Incumbent re-elected. | nowrap | |- ! | Gus Yatron | | Democratic | 1968 | Incumbent re-elected. | nowrap | |- ! | Robert W. Edgar | | Democratic | 1974 | Incumbent re-elected. | nowrap | |- ! | Edward G. Biester Jr. | | Republican | 1966 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |- ! | Bud Shuster | | Republican | 1972 | Incumbent re-elected. | nowrap |