A campaign backed by major progressive and abortion advocacy organizations has raised over $6.5 million to try to prevent Missouri from reinstating abortion restrictions through a constitutional amendment that will be put to a vote in November. Among its main funders is former New York City Democratic Mayor Michael Bloomberg, who contributed $1.25 million to the opposing effort.
The campaign, called ''Stop the Ban'', was created last year by pro-abortion groups to combat Amendment 3. The goal of the initiative is to prevent Missouri voters from modifying the state constitution again after an amendment approved in 2024 established the constitutional right to abortion and eliminated the restrictions that were in place.
Bloomberg had already financially intervened in the dispute. In 2024, he donated one million dollars to the campaign that promoted that amendment, which was approved with 52% of the votes against 48%. Before that constitutional change, Missouri prohibited abortion except in circumstances related to medical emergencies or when necessary to save the life of the mother.

Now, the same sectors seek to prevent the state from adopting a more restrictive policy again. Among the main members and funders of ''Stop the Ban'' are the ACLU of Missouri, Fairness Project, Planned Parenthood Great Plains Votes, Planned Parenthood Great Rivers Action, Abortion Action Missouri, PROMO, and Beacon Reproductive Health Network.
The magnitude of the resources raised contrasts with the funding available for the groups supporting the new amendment. The main political committee in favor of the measure, ''Hear Health'' and ''Her Future PAC'', had raised around one million dollars. The group is backed by Republican Governor Mike Kehoe and Missouri First Lady Claudia Kehoe.
The proposal to be voted on in November seeks to limit abortions, establishing exceptions for medical emergencies and for pregnancies resulting from rape or incest during the first 12 weeks. Additionally, the initiative would incorporate into the state constitution a ban on gender transition medications and surgeries for minors.











