From 1889 to 1974, the governor served a 2-year term. Until the 1940s, the governor was allowed to serve unlimited terms; since that time, governors have been limited to 2 consecutive terms. The gubernatorial term was extended to 4 years in 1974. The governor and
lieutenant governor run on a single ticket. The gubernatorial nominee must win a primary, whereas the lieutenant governor nominee is selected at a state party convention. After the convention, they run on a single ticket. On April 19, 1993,
George S. Mickelson was killed in a plane crash near
Dubuque, Iowa; Mickelson is the only South Dakota governor to die in office. Mickelson and his father,
George Theodore Mickelson, are the only father-son duo to serve as governor. On January 25, 2025,
Kristi Noem resigned to become the
United States Secretary of Homeland Security in the
Cabinet of
President Donald Trump. South Dakota's longest-serving governor was
Bill Janklow; he was the first governor to complete two four-year terms, and he did it twice, serving from 1979 to 1987 and again from 1995 to 2003. Janklow is also the only person to serve non-consecutive terms as governor. Several governors have gone on to serve in other high offices.
Coe I. Crawford,
Peter Norbeck,
William H. McMaster,
William J. Bulow,
Harlan J. Bushfield, and
Mike Rounds followed their tenures as governor by serving in the
United States Senate. Bill Janklow served briefly in the
United States House of Representatives following his second stint as governor.
Kristi Noem was South Dakota's first female governor. Of the 50 states, South Dakota currently holds the longest non-interrupted party control of the governorship. The Republican Party has controlled the South Dakota governorship since January 1, 1979. ==Timeline==