Missouri Amendment 3, a legislatively referred measure on the November 3, 2026 ballot, would repeal the reproductive freedom protections voters approved in 2024 and impose near-total abortion restrictions with narrow exceptions for medical emergencies, rape or incest up to 12 weeks, and fetal anomalies, while also constitutionally banning gender transition procedures for minors. Trader consensus that the measure will fail reflects sustained voter support for the prior amendment, recent mobilization by opposition groups such as the Stop the Ban coalition that launched its campaign in late May 2026, and ongoing legal scrutiny of ballot language. Missouri’s Republican-controlled legislature advanced the proposal, but historical precedent from the 2024 vote and active resistance from reproductive-rights advocates indicate significant barriers to passage at the ballot box. No major legislative or polling shifts have altered this dynamic in the weeks leading into mid-June 2026.