| |- ! | Jack Thomas Brinkley | | Democratic | 1966 | Incumbent re-elected. | nowrap | |- ! | Benjamin B. Blackburn | | Republican | 1966 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Andrew Young | | Democratic | 1972 | Incumbent re-elected. | nowrap | |- ! | Jack Flynt | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | John W. Davis | | Democratic | 1960 | | Incumbent lost renomination.New member elected.Democratic hold. | nowrap | |- ! | W. S. Stuckey Jr. | | Democratic | 1966 | Incumbent re-elected. | nowrap | |- ! | Phillip M. Landrum | | Democratic | 1952 | Incumbent re-elected. | nowrap | |- ! | Robert Grier Stephens Jr. | | Democratic | 1960 | Incumbent re-elected. | nowrap | |} Hawaii |- ! | Spark Matsunaga | | Democratic | 1962 | Incumbent re-elected. | nowrap | |- ! | Patsy Mink | | Democratic | 1964 | Incumbent re-elected. | nowrap | |} Idaho |- ! | Steve Symms | | Republican | 1972 | Incumbent re-elected. | nowrap | |- ! | Orval H. Hansen | | Republican | 1968 | | Incumbent lost renomination.New member elected.Republican hold. | nowrap | |} Illinois |- ! | Ralph H. Metcalfe | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Morgan F. Murphy | | Democratic | 1970 | Incumbent re-elected. | nowrap | |- ! | Robert P. Hanrahan | | Republican | 1972 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Ed Derwinski | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | John C. Kluczynski | | Democratic | 1950 | Incumbent re-elected. | nowrap | |- ! | Harold R. Collier | | Republican | 1956 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Cardiss Collins | | Democratic | 1973 | Incumbent re-elected. | nowrap | |- ! | Dan Rostenkowski | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Sidney R. Yates | | Democratic | 19481962 1964 | Incumbent re-elected. | nowrap | |- ! | Samuel H. Young | | Republican | 1972 | | Incumbent lost re-election.New member