2018 South Dakota Senate election
November 6, 2018
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All 35 seats in the South Dakota Senate 18 seats needed for a majority | ||||||||||||||||||||||||||||
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| Turnout | 64.89% | |||||||||||||||||||||||||||
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| Elections in South Dakota |
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The 2018 South Dakota Senate election was held on November 6, 2018, to determine which party would control the South Dakota Senate for the following two years in the 94th South Dakota Legislature. All 35 seats in the South Dakota Senate were up for election and the primary was held on June 5, 2018. Prior to the election, 29 seats were held by Republicans and 6 seats were held by Democrats. The general election saw Republicans expanding their majority in the State Senate by a single seat.