elected.Democratic hold. | nowrap | |- ! | Abner Mikva | | Democratic | 1968 | Incumbent re-elected. | nowrap | |- ! | William T. Murphy | | Democratic | 1958 | | Incumbent retired.New member elected.Democratic hold. | nowrap | |- ! | Ed Derwinski | | Republican | 1958 | Incumbent re-elected. | nowrap | |- ! | John C. Kluczynski | | Democratic | 1950 | Incumbent re-elected. | nowrap | |- ! | Daniel J. Ronan | | Democratic | 1964 | | Incumbent died.New member elected.Democratic hold. | nowrap | |- ! | Frank Annunzio | | Democratic | 1964 | Incumbent re-elected. | nowrap | |- ! | Dan Rostenkowski | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Sidney R. Yates | | Democratic | 19481962 1964 | Incumbent re-elected. | nowrap | |- ! | Harold R. Collier | | Republican | 1956 | Incumbent re-elected. | nowrap | |- ! | Roman Pucinski | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Robert McClory | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | Phil Crane | | Republican | 1969 | Incumbent re-elected. | nowrap | |- ! | John N. Erlenborn | | Republican | 1964 | Incumbent re-elected. | nowrap | |- ! | Charlotte Thompson Reid | | Republican | 1962 | Incumbent re-elected. | nowrap | |- ! | John B. Anderson | | Republican | 1960 | Incumbent re-elected. | nowrap | |- ! | Leslie C. Arends | | Republican | 1934 | 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 | |- ! | Kenneth J. Gray | | Democratic | 1954 | Incumbent re-elected. | nowrap | |- ! | William L. Springer | | Republican | 1950 | Incumbent re-elected. | nowrap | |- ! | George E. Shipley | | Democratic | 1958 | Incumbent re-elected. | nowrap | |- ! | Melvin Price | | Democratic | 1944 | Incumbent re-elected. | nowrap | |} Indiana |- ! |