1940 South Dakota Senate election

Elections to the South Dakota Senate were held on November 5, 1940, to elect 35 candidates to the Senate to serve a two-year term in the 27th South Dakota Legislature. Republicans won thirty-one seats, a gain of one from the thirty they won at the 1938 general election, retaining their supermajority status in the chamber. Democrats won four seats, a loss of one from 1938. Republican Senator D. J. Tiede of Parkston (District 4, Douglas–Hutchinson) was elected President pro tempore of the Senate.

1940 South Dakota Senate election

November 5, 1940
35 seats in the South Dakota Senate 18 seats needed for a majority
Majority party Minority party   Leader A. W. Odell Carl Weir Party Republican Democratic Leader since 1939 1939 Leader's seat 8th (McCook–Hanson) 15th (Beadle Co.) Last election 30 5 Seats won 31 4 Seat change 1 1 Popular vote 85,784 55,130
Republican hold      Republican gain      Democratic hold      Democratic gain Multi-member districts:      Republican majority      Democratic majority Republican:      50–60%      60–70%      Unopposed Republican:      50–60%      60–70%      70–80%      Unopposed Democratic:      50–60%      60–70%      No votes
President pro tempore before election A. W. Odell Republican Elected President pro tempore D. J. Tiede Republican

This election took place alongside races for U.S. presidential electors, U.S. House, governor, state house, and numerous other state and local elections.

See also

• List of South Dakota state legislatures