2026 Missouri Amendment 4

Missouri Amendment 4, officially the Require Approval in Each Congressional District for Citizen-Initiated Constitutional Amendments and Add Provisions on Petition Fraud and Foreign Contributions Amendment, is an legislatively referred constitutional amendment that will appear on the ballot in the U.S. state of Missouri on November 3, 2026, concurrent with the 2026 United States elections.

Background

Currently in Missouri, citizen-initiated constitutional amendments may be approved by voters with 50% of the vote. The amendment to require these citizen-led amendments to be approved in each of Missouri's eight congressional districts was approved for the ballot in September 2025. Some measures, such as Medicaid expansion in 2020, abortion rights in 2024, and a minimum wage expansion in 2024 would have failed if this proposal was in effect.