to become Lieutenant Governor of California.New member elected November 7, 1916. Progressive hold.Successor was not elected to the next term, see below. | nowrap | |- ! | James Hay | | Democratic | 1896 | | Incumbent resigned October 1, 1916 to become Judge of the United States Court of Claims.New member elected November 7, 1916.Democratic hold.Successor was also elected to the next term, see below. | nowrap | |} Alabama |- ! | Oscar L. Gray | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | S. Hubert Dent Jr. | | Democratic | 1908 | Incumbent re-elected. | nowrap | |- ! | Henry B. Steagall | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | Fred L. Blackmon | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | James T. Heflin | | Democratic | 1904 | Incumbent re-elected. | nowrap | |- ! | William B. Oliver | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | John L. Burnett | | Democratic | 1898 | Incumbent re-elected. | nowrap | |- ! | Edward B. Almon | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | George Huddleston | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | colspan=3 | None | | New seat.New member elected.Democratic gain. | nowrap | |} Arizona |- ! | Carl Hayden | | Democratic | 1911 | Incumbent re-elected. | nowrap | |} Arkansas |- ! | Thaddeus H. Caraway | | Democratic | 1912 | Incumbent re-elected. | nowrap | |- ! | William A. Oldfield | | Democratic | 1908 | Incumbent re-elected. | nowrap | |- ! | John N. Tillman | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- ! | Otis Wingo | | Democratic | 1912 | Incumbent re-elected. | nowrap | |- ! | Henderson M. Jacoway | | Democratic | 1910 | Incumbent re-elected. | nowrap | |- ! | Samuel M. Taylor | | Democratic | 1913 | Incumbent re-elected. | nowrap | |- ! | William S. Goodwin | | Democratic | 1910 | Incumbent re-elected. | nowrap | |} California Colorado |- ! | Benjamin Hilliard | | Democratic | 1914 | Incumbent re-elected. | nowrap | |- !