Missouri Amendment 4 (Require Congressional District Approval for Initiated Constitutional Amendments, Prohibit Foreign Contributions, and Penalize Petition Fraud Amendment) was on the August 4, 2026 ballot. Rejected by roughly 80 percent of voters on August 4, 2026; results were certified by the Board of State Canvassers on August 25.
What a yes or no vote means
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About this measure
Missouri initiative petitions must hit district thresholds in six of the state's eight congressional districts: 8 percent of the last gubernatorial vote per district for constitutional amendments (about 170,215 signatures using the six lowest districts for 2026) and 5 percent for statutes (about 106,384), with veto referendums needing 5 percent in two-thirds of districts. The General Assembly refers constitutional amendments by majority vote of both chambers on a joint resolution. All measures pass by simple majority.
Wording above follows the certified ballot language; The Ballot Brief does not take positions on measures.