| | Incumbent resigned November 2, 1914, to become U.S. Senator.New member elected November 3, 1914.Democratic hold. | nowrap | |- ! | James Harry Covington | | Democratic | 1908 | | Incumbent resigned September 30, 1914, to become Chief Justice of the Supreme Court of the District of Columbia.New member elected November 3, 1914.Democratic hold. | nowrap | |} Alabama |- ! | George W. Taylor | | Democratic | 1896 | | Incumbent retired.New member elected.Democratic hold. | Oscar Lee Gray (Democratic) Unopposed |- ! | S. Hubert Dent Jr. | | Democratic | 1908 | Incumbent re-elected. | S. Hubert Dent Jr. (Democratic) Unopposed |- ! | William Oscar Mulkey | | Democratic | 1914 | | Incumbent retired.New member elected.Democratic hold. | Henry B. Steagall (Democratic) Unopposed |- ! | Fred L. Blackmon | | Democratic | 1908 | Incumbent re-elected. | Fred L. Blackmon (Democratic) Unopposed |- ! | J. Thomas Heflin | | Democratic | 1904 | Incumbent re-elected. | J. Thomas Heflin (Democratic) Unopposed |- ! | Richmond P. Hobson | | Democratic | 1906 | | Incumbent lost renomination.New member elected.Democratic hold. | |- ! | John L. Burnett | | Democratic | 1898 | Incumbent re-elected. | |- ! | Oscar Underwood | | Democratic | 1896 | | Incumbent retired to run for U.S. Senator.New member elected.Democratic hold. | |- ! | Christopher C. Harris | | Democratic | 1914 | | Incumbent retired.New member elected.Democratic hold. | |- ! | John W. Abercrombie | | Democratic | 1912 | Incumbent re-elected. | |} Arizona |- ! | Carl Hayden | | Democratic | 1911 | Incumbent re-elected. | nowrap | |} Arkansas |- ! | Thaddeus H. Caraway | | Democratic | 1912 | Incumbent re-elected. | Thaddeus H. Caraway (Democratic) Unopposed |- ! | William Allan Oldfield | | Democratic | 1908 | Incumbent re-elected. | William Allan Oldfield (Democratic) Unopposed |- ! | John C. Floyd | | Democratic | 1904 | | Incumbent retired.New member elected.Democratic hold. | |- ! | Otis Wingo | | Democratic | 1912 | Incumbent re-elected. | |- ! | Henderson M. Jacoway | | Democratic | 1910 | Incumbent re-elected. | Henderson M. Jacoway (Democratic) Unopposed |- ! | Samuel M. Taylor | | Democratic | 1912 | Incumbent re-elected. | Samuel M. Taylor (Democratic) Unopposed |- ! |