Elected by Voters to 6-year terms (Constitution of 1851, Art. IV, sec. 18):
1851-1852 George R. Howard
1852-1856 James H. Jamar
1856-1857 Reuben D. Jamar
1857-1863 James McCauley
1863-1865 Chalkely B. Cutler
Elected by Voters to 6-year terms (Constitution of 1864, Art. IV, sec. 46):
1865-1867 Chalkely B. Cutler
Elected by Voters to 6-year terms (Constitution of 1867, Art. IV, sec. 41):
1867-1878 Reuben D. Jamar (died Dec. 1, 1878)
1878-1879 Reuben E. Jamar
1879-1884 Henry D. Miller (died Feb. 23, 1884)
1884-1903 Reuben E. Jamar
1903-1915 Thomas B. Miller
1915-1921 Rufus D. Bowland
1921-1926 Robert J. McCauley
Elected by Voters to 4-year terms (Constitution of 1867, Art. XVII, added by Chapter 227, Acts of 1922, ratified Nov. 7, 1922):
1926-1934 Robert J. McCauley
1934-1942 Jesse E. Pierson (R)
1942-1954 W. Andrew Seth (D)
1954-1956 Bessie C. Hartnett
Elected by Voters to 4-year terms (Constitution of 1867, Art. IV, sec. 41, amended by Chapter 99, Acts of 1956, ratified Nov. 6, 1956):
1956-1966 Bessie C. Hartnett
1966-1982 Ruth H. Towler
1982-1990 Lillian D. Rodgers
1990-1998 R. Sandra Tamargo (D)
1998-2014 Allyn Price Nickle (D)
2014-2018 Michael W. Dawson (R)
2018- Allyn Price Nickle (R) (changed party affiliation from Democrat to Republican in 2018)
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