Missouri voters reject Republican congressional map in Proposition A referendum

Missouri voters rejected Proposition A on Tuesday, Nov. 3, blocking a Republican-backed congressional map designed to give the party a help the party win seven of Missouri’s eight U.S. House seats.

The Associated Press called the referendum at 9:59 p.m. CST Tuesday. As of Thursday afternoon, with more than 99% of expected votes counted, 61.8% of voters opposed the map, or 1,274,170 votes, while 38.2%, or 786,355 votes, supported it, according to AP.

A “yes” vote would have upheld the 2025 map approved by the Republican-led Legislature. A “no” vote rejected the plan and kept Missouri’s 2022 congressional map in place.

The 2025 map sought to make Kansas City’s Democratic-held 5th Congressional District more favorable to Republicans, potentially helping the party gain another seat in the U.S. House. The proposal became a major political fight after President Donald Trump urged Missouri Republicans to redraw the state’s districts mid-decade.

The referendum also became a test of Missouri’s citizen-led ballot process. The state Supreme Court ruled that the referendum could proceed, and the 2022 map remained in effect for the November election while voters decided the measure.

The results also highlighted the limits of Republican efforts to reshape Missouri’s political system. Voters rejected the proposed congressional map, preserving the existing districts, while approving Amendment 6, which strengthens protections for the citizen-led initiative process. The twin outcomes leave Missouri’s Republican lawmakers facing a more difficult path to changing voter-approved measures and suggest that voters were unwilling to give the Legislature broader control over the state’s political rules.