Elections to the South Dakota Senate were held on November 4, 1930, to elect 45 candidates to the Senate to serve a two-year term in the 22nd South Dakota Legislature. Republicans won thirty-one seats, down from thirty-three at the 1928 general election, retaining their majority in the chamber. L. M. Simons of Belle Fourche was re-elected President pro tempore of the Senate.
This election took place alongside races for U.S. Senate, U.S. House, governor, state house, and numerous other state and local elections.
See also List of South Dakota state legislatures
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