lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Thomas Sutler Williams | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Edward E. Denison | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Richard Yates Jr. | | Republican | 1918 | Incumbent re-elected. | rowspan=2 nowrap | |- ! | Winnifred S. M. Huck | | Republican | 1922 | | Incumbent lost renomination.New member elected.Republican hold. |} Indiana |- ! | Oscar R. Luhring | | Republican | 1918 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Oscar E. Bland | | Republican | 1916 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | James W. Dunbar | | Republican | 1918 | | Incumbent retired.New member elected.Democratic gain. | nowrap | |- ! | John S. Benham | | Republican | 1918 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Everett Sanders | | Republican | 1916 | Incumbent re-elected. | nowrap | |- ! | Richard N. Elliott | | Republican | 1918 | Incumbent re-elected. | nowrap | |- ! | Merrill Moores | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Albert H. Vestal | | Republican | 1916 | Incumbent re-elected. | nowrap | |- ! | Fred S. Purnell | | Republican | 1916 | Incumbent re-elected. | nowrap | |- ! | William R. Wood | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Milton Kraus | | Republican | 1916 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Louis W. Fairfield | | Republican | 1916 | Incumbent re-elected. | nowrap | |- ! | Andrew J. Hickey | | Republican | 1918 | Incumbent re-elected. | nowrap | |} Iowa |- ! | William F. Kopp | | Republican | 1920 | Incumbent re-elected. | nowrap | |- ! | Harry E. Hull | | Republican | 1914 | Incumbent re-elected. | nowrap | |- ! | Burton E. Sweet | | Republican | 1914 | | Incumbent retired to run for U.S. senator.New member elected.Republican hold. | nowrap | |- ! | Gilbert N. Haugen | | Republican | 1898 | Incumbent re-elected.