Oklahoma Senate Party - Republican Party vs Democratic Party
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Voters in Oklahoma will elect one member to the U.S. Senate in the general election on November 3, 2026. The primary is June 16, 2026, and a primary runoff is August 25, 2026. The filing deadline is April 3, 2026. The election will fill the Class II Senate seat previously held by Markwayne Mullin (R), who first took office in 2023 and resigned in March 2026.
2026 Politics - Which party will win the general election for U.S. Senate in Oklahoma on November 3, 2026?