Missouri voters will decide on November 3 whether to approve Amendment 3, a legislatively referred measure that would repeal the reproductive rights amendment passed in 2024, reinstate near-total abortion restrictions with exceptions for medical emergencies, fetal anomalies, and rape or incest before 12 weeks, require parental consent, and embed a permanent constitutional prohibition on gender transition procedures for minors. The existing statutory ban on such procedures, upheld unanimously by the Missouri Supreme Court in January 2026, faces a partial sunset in 2027, prompting supporters to seek constitutional entrenchment through this bundled ballot question. Campaign efforts have centered on the gender care provisions to build support in a contest polling as closely divided, producing the current trader consensus of roughly 57.5% implied probability for passage.