Incumbent Reason for Vacancy Appointed Successor Date of Appointment Elected Successor Date of Election
L. B. Lindsay Disqualified, never took office Henry E. Prickett November 19, 1867 Thomas B. Hart January 1868
John Hailey Never took office Charles Himrod July 10, 1871 George H. Twitchell July 8, 1872
Sol Hasbrouck Resigned November 5, 1885 James W. Huston December 28, 1885 Peter J. Pefley July 1887
Harry Fritchman Resigned May 25, 1912 Arthur Hodges May 25, 1912 Arthur Hodges April 1, 1913
J. W. Robinson Recalled June 1, 1916 S. H. Hays June 6, 1916 S. H. Hays April 1917
Herbert F. Lemp Died May 6, 1927 Walter F. Hansen May 6, 1927 James P. Pope April 1929
James P. Pope Resigned February 13, 1933 Ross Cady February 13, 1933 J. J. McCue April 1933
Byron E. Hyatt Died November 11, 1936 J. L. Edlefsen November 11, 1936 J. L. Edlefsen April 1937
H. W. Whillock Resigned May 11, 1942 Austin Walker May 11, 1942 Austin Walker April 1943
Austin Walker
Sam S. Griffin
Died October 31, 1945
Resigned February 25, 1946
Sam S. Griffin
H. W. Whillock
October 31, 1945
February 25, 1946
Potter P. Howard April 1947
Dirk Kempthorne Resigned January 5, 1993 H. Brent Coles January 5, 1993 H. Brent Coles November 1993
H. Brent Coles Resigned February 15, 2003 Carolyn Terteling-Payne February 18, 2003 David H. Bieter November 2003