elected.Democratic gain. | nowrap | |- ! | Frank Annunzio | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Phil Crane | | Republican | 1969 | Incumbent re-elected. | nowrap | |- ! | Robert McClory | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | John N. Erlenborn | | Republican | 1964 | Incumbent re-elected. | nowrap | |- ! | Leslie C. Arends | | Republican | 1934 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |- ! | John B. Anderson | | Republican | 1960 | Incumbent re-elected. | nowrap | |- ! | George M. O'Brien | | Republican | 1972 | Incumbent re-elected. | nowrap | |- ! | Robert H. Michel | | Republican | 1956 | Incumbent re-elected. | nowrap | |- ! | Tom Railsback | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Paul Findley | | Republican | 1960 | Incumbent re-elected. | nowrap | |- ! | Edward Rell Madigan | | Republican | 1972 | Incumbent re-elected. | nowrap | |- ! | George E. Shipley | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Melvin Price | | Democratic | 1944 | Incumbent re-elected. | nowrap | |- ! | Kenneth J. Gray | | Democratic | 1954 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |} Indiana |- ! | Ray J. Madden | | Democratic | 1942 | Incumbent re-elected. | nowrap | |- ! | Earl F. Landgrebe | | Republican | 1968 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | John Brademas | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | J. Edward Roush | | Democratic | 19581968 1970 | Incumbent re-elected. | nowrap | |- ! | Elwood Hillis | | Republican | 1970 | Incumbent re-elected. | nowrap | |- ! | William G. Bray | | Republican | 1950 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | John T. Myers | | Republican | 1966 | Incumbent re-elected. | nowrap | |- ! | Roger H. Zion | | Republican | 1966 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! |