| | Incumbent lost re-election.Democratic gain. | nowrap | |- ! | George W. Rauch | | Democratic | 1906 | Incumbent re-elected. | nowrap | |- ! | Cyrus Cline | | Democratic | 1906 | Incumbent re-elected. | nowrap | |- ! | Henry A. Barnhart | | Democratic | 1908 | Incumbent re-elected. | nowrap | |} Iowa |- ! | Charles A. Kennedy | | Republican | 1906 | Incumbent re-elected. | nowrap | |- ! | Irvin S. Pepper | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Charles E. Pickett | | Republican | 1908 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Gilbert N. Haugen | | Republican | 1898 | Incumbent re-elected. | nowrap | |- ! | Gilbert N. Haugen | | Republican | 1908 | Incumbent re-elected. | nowrap | |- ! | Nathan E. Kendall | | Republican | 1908 | | Incumbent renominated but withdrew prior to election.New member elected.Democratic gain. | nowrap | |- ! | Solomon F. Prouty | | Republican | 1908 | Incumbent re-elected. | nowrap | |- ! | Horace Mann Towner | | Republican | 1910 | Incumbent re-elected. | nowrap | |- ! | William R. Green | | Republican | 1911 | Incumbent re-elected. | nowrap | |- ! | Frank P. Woods | | Republican | 1908 | Incumbent re-elected. | nowrap | |- ! | Elbert Hamilton Hubbard | | Republican | 1908 | | Incumbent died June 4, 1912.New member elected. Republican hold. | nowrap | |} Kansas |- ! | Daniel R. Anthony Jr. | | Republican | 1907 | Incumbent re-elected. | nowrap | |- ! | Joseph Taggart | | Democratic | 1911 | Incumbent re-elected. | nowrap | |- ! | Philip P. Campbell | | Republican | 1902 | Incumbent re-elected. | nowrap | |- ! | Fred S. Jackson | | Republican | 1910 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Rollin R. Rees | | Republican | 1910 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | Isaac D. Young | | Republican | 1910 | | Incumbent lost re-election.New member elected.Democratic gain. | nowrap | |- ! | George A. Neeley | | Democratic | 1912