1916 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Addison T. Smith | | Republican | 1912 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |} Illinois |- ! | Oscar Stanton De Priest | | Republican | 1928 | Incumbent re-elected. | nowrap | |- ! | Morton D. Hull | | Republican | 1923 | | Incumbent retired.New member elected.Republican hold. | nowrap | |- ! | Edward A. Kelly | | Democratic | 1930 | Incumbent re-elected. | nowrap | |- ! | Harry P. Beam | | Democratic | 1930 | Incumbent re-elected. | nowrap | |- ! | Adolph J. Sabath | | Democratic | 1906 | Incumbent re-elected. | nowrap | |- ! | James T. Igoe | | Democratic | 1926 | | Incumbent lost renomination.New member elected.Democratic hold. | nowrap | |- ! | Leonard W. Schuetz | | Democratic | 1930 | Incumbent re-elected. | nowrap | |- ! | Peter C. Granata | | Republican | 1930 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Frederick A. Britten | | Republican | 1912 | Incumbent re-elected. | nowrap | |- ! | Carl R. Chindblom | | Republican | 1918 | | Incumbent lost renomination.New member elected.Republican hold. | nowrap | |- ! | Frank R. Reid | | Republican | 1922 | Incumbent re-elected. | nowrap | |- ! | John T. Buckbee | | Republican | 1926 | Incumbent re-elected. | nowrap | |- ! | William Richard Johnson | | Republican | 1924 | | Incumbent lost renomination.New member elected.Republican hold. | nowrap | |- ! | John Clayton Allen | | Republican | 1924 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Burnett M. Chiperfield | | Republican | 1930 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | William E. Hull | | Republican | 1922 | | Incumbent lost renomination.New member elected.Republican hold. | nowrap | |- ! | Homer W. Hall | | Republican | 1926 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | William P. Holaday | | Republican | 1922 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Charles Adkins | | Republican