rowspan=4 nowrap | |- | William E. Williams | | 1912 | Incumbent re-elected. |} Indiana |- ! | Charles Lieb | | Democratic | 1912 | Incumbent re-elected. | |- ! | William A. Cullop | | Democratic | 1908 | Incumbent re-elected. | |- ! | William E. Cox | | Democratic | 1906 | Incumbent re-elected. | |- ! | Lincoln Dixon | | Democratic | 1904 | Incumbent re-elected. | |- ! | Ralph Wilbur Moss | | Democratic | 1908 | Incumbent re-elected. | |- ! | Finly H. Gray | | Democratic | 1910 | Incumbent re-elected. | |- ! | Charles A. Korbly | | Democratic | 1908 | | Incumbent lost re-election.New member elected.Republican gain. | |- ! | John A. M. Adair | | Democratic | 1906 | Incumbent re-elected. | |- ! | Martin A. Morrison | | Democratic | 1908 | Incumbent re-elected. | |- ! | John B. Peterson | | Democratic | 1912 | | Incumbent lost re-election.New member elected.Republican gain. | |- ! | George W. Rauch | | Democratic | 1906 | Incumbent re-elected. | |- ! | Cyrus Cline | | Democratic | 1908 | Incumbent re-elected. | |- ! | Henry A. Barnhart | | Democratic | 1908 | Incumbent re-elected. | |} Iowa |- ! | Charles A. Kennedy | | Republican | 1906 | Incumbent re-elected. | |- ! | Henry Vollmer | | Democratic | 1914 (special) | | Incumbent retired.New member elected.Republican gain. | |- ! | Maurice Connolly | | Democratic | 1912 | | Incumbent retired to run for U.S. Senator.New member elected.Republican gain. | |- ! | Gilbert N. Haugen | | Republican | 1898 | Incumbent re-elected. | |- ! | James W. Good | | Republican | 1908 | Incumbent re-elected. | |- ! | Sanford Kirkpatrick | | Democratic | 1912 | | Incumbent lost renomination.New member elected.Republican gain. | |- ! | Charles E. Patton | | Republican | 1910 | | Incumbent retired.New member elected.Republican hold. | |- ! | Horace M. Towner | | Republican | 1910 | Incumbent re-elected. | |- ! | William R. Green | | Republican | 1911 (special) | Incumbent re-elected. | |- ! | Frank P. Woods | | Republican | 1908 | Incumbent re-elected. | |- ! | George Cromwell Scott | |