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17 even-numbered districts in the Missouri Senate 18 seats needed for a majority | ||||||||||||||||||||||
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![]() Map of the incumbents: Republican incumbent Democratic incumbent No election | ||||||||||||||||||||||
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Elections in Missouri |
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The 2026 Missouri Senate election is to take place on Tuesday, November 3, 2026, with the primary election are to take place on Tuesday, August 4, 2026. [1] Missouri voters selected state senators in the 17 even-numbered districts of the Senate to serve four-year terms. [2]
The election coincides with United States national elections and Missouri state elections, including U.S. House, Auditor, and Missouri House.
Following the previous election in 2024, Republicans held a 24-to-10-seat supermajority over Democrats. [3] The balance of power remained unchanged with Republicans keeping their supermajority of 24-to-10 over Democrats.