Elected by Voters to 4-year terms (Constitution of 1867, Art. V, secs. 7-12):
1873-1875 John W. Wolfe
1875-1887 John W. Veitch
1887-1891 William P. Townshend
1891-1895 Gilmor Semmes Hamill (D)
1895-1907 Frederick A. Thayer
1907-1916 Julius C. Renninger
1916-1920 Ernest Ray Jones (R)
1920-1927 William R. Offutt (D)
1927-1930 Julius C. Renninger
1930-1935 Walter W. Dawson (R)
1935-1947 Neil C. Fraley (R)
1947-1955 W. Dwight Stover (R)
1955-1959 Stephen H. Pagenhardt
1959-1962 W. Dwight Stover (R)
1962-1975 Frederick A. Thayer III
1975-1979 Ralph M. Burnett (R)
1979-1996 James L. Sherbin (R)
1996- Lisa Thayer Welch (R)
