Missouri Amendment 3 (2026): What It Does and Yes Vote
Missouri Amendment 3 is a proposed constitutional amendment on the November 3, 2026 ballot. It would repeal the constitutional amendment on abortion approved by voters in 2024 and replace it with new constitutional provisions allowing regulation of abortion facilities for health and safety, and outlawing gender transition procedures for minors.
Amendment 3 would allow abortion in cases of medical emergency, fetal anomaly, rape, or incest. Missouri lawmakers could regulate abortion providers and facilities to protect women’s health and safety, require informed consent and parental consent for minors, protect access to care for miscarriages, ectopic pregnancies, and medical emergencies, and prohibit gender transition procedures for minors.
A yes vote supports replacing the 2024 amendment on abortion with these provisions.
Quick Facts
Election: November 3, 2026
Topic: Abortion law, women’s health and safety standards, parental consent, and gender transition procedures for minors
Main issue: Whether Missouri should repeal the aboriton amendment approved in 2024 and replace it with new constitutional rules governing abortion and gender transition procedures for minors.
What a yes vote means: A yes vote repeals the 2024 amendment and adopts the new provisions in Amendment 3.
What a no vote means: A no vote leaves the 2024 reproductive-freedom amendment in the Missouri Constitution.
Key provisions: Amendment 3 allows abortion in cases of medical emergency, fetal anomaly, rape, or incest; allows the legislature to regulate abortion providers and facilities for health and safety; requires informed consent and parental consent for minors; protects access to care for miscarriages, ectopic pregnancies, and medical emergencies; and prohibits gender transition procedures for minors.
Bottom line: Amendment 3 would replace Missouri’s current reproductive-freedom amendment with a new constitutional framework for abortion, women’s health and safety standards, parental consent, and protections for children.
The official ballot title certified by the Missouri Secretary of State reads:
Shall the Missouri Constitution be amended to:
- Repeal the 2024 voter-approved Amendment providing reproductive healthcare rights, including abortion through fetal viability;
- Allow abortions for rape and incest (under twelve-weeks’ gestation), emergencies, and fetal anomalies;
- Allow legislation regulating abortion;
- Ensure parental consent for minors’ abortions;
- Prohibit gender transition procedures for minors?
State governmental entities estimate no costs or savings. Greene County estimates it may experience an unknown increase in tax revenue. Other local governmental entities estimate no costs or savings.
What is Missouri Amendment 3?
Missouri Amendment 3 is a proposed constitutional amendment that would repeal the abortion amendment voters approved in 2024 and replace it with a new section of the Missouri Constitution governing abortion and gender transition procedures for minors.
Amendment 3 would allow abortion in cases of medical emergency, fetal anomaly, rape, or incest. It would allow Missouri to regulate abortion providers and facilities to protect women’s health and safety, require informed consent and parental consent for minors, and prohibit gender transition procedures for minors.
Amendment 3 asks voters whether Missouri should replace the 2024 abortion amendment with this new constitutional framework.
What does a yes vote on Missouri Amendment 3 mean?
A yes vote on Amendment 3 supports repealing the abortion amendment Missouri voters approved in 2024 and replacing it with a new constitutional framework.
If Amendment 3 passes, Missouri would allow health and safety regulations for abortion providers and facilities, require informed and voluntary consent, including parental or judicial consent for minors, and prohibit gender transition procedures for minors.
A yes vote preserves access to medical care for miscarriages, ectopic pregnancies, and medical emergencies.
What does a no vote on Missouri Amendment 3 mean?
A no vote on Amendment 3 would leave the abortion amendment Missouri voters approved in 2024 in the state Constitution.
If Amendment 3 fails, Missouri would not adopt the new constitutional framework limiting abortion to cases of medical emergency, fetal anomaly, rape, or incest, and the proposed prohibition on gender transition procedures for minors would not take effect.
Health and Safety
Missouri voters overwhelmingly agree that Missouri should have laws regulating the health and safety of abortion facilities and the manner in which abortions are performed to keep women safe.
- – From 2009-2016 (before the fall of Roe v. Wade), ambulances were called to a single St. Louis Planned Parenthood clinic once every 46 days.
- – In 2022, DHSS estimated the complication rate for Missouri abortions was 1 in 50.
Provider Regulations
After voters approved the 2024 abortion amendment, Planned Parenthood challenged Missouri’s existing abortion laws and health and safety regulations.
In June 2026, a Jackson County judge permanently blocked most of the challenged abortion-specific laws and regulations under the 2024 amendment. Among the requirements that can no longer be enforced are abortion-facility licensing, hospital admitting privileges, complication plans, a 72-hour waiting period, and several reporting and informed-consent requirements.
Amendment 3 would replace the 2024 abortion amendment and expressly allow Missouri to enact laws regulating abortion providers and facilities to protect women’s health and safety.
Parental Consent and Protections for Minors
Amendment 3 would require written consent from a parent or legal guardian before a non-emancipated minor may obtain an abortion, except in a medical emergency when consent cannot be obtained. It would also allow the General Assembly to provide a process for a minor to obtain consent through a court order.
The amendment would also prohibit gender transition surgeries, cross-sex hormones, and puberty-blocking drugs for children under 18, with limited exceptions for certain medical conditions.
In 2025, the United States Supreme Court upheld a Tennessee law restricting puberty blockers and hormones for minors seeking gender transition, ruling that the law satisfied constitutional equal-protection requirements.
Frequently Asked Questions about Missouri Amendment 3
Amendment 3 is a proposed constitutional amendment on the November 3, 2026 ballot. It would repeal the abortion amendment Missouri voters approved in 2024 and replace it with a new constitutional framework governing abortion and gender transition procedures for minors.
A yes vote supports repealing the 2024 abortion amendment and replacing it with the provisions in Amendment 3. It would allow health and safety regulations for abortion providers and facilities, require informed consent and parental consent for minors, and prohibit gender transition procedures for minors.
A no vote would leave the 2024 abortion amendment in the Missouri Constitution. Abortion would remain constitutionally protected through fetal viability, and the new provisions proposed by Amendment 3 would not take effect.
No. Amendment 3 would allow abortions in cases of medical emergency, fetal anomaly, rape, or incest. Abortions for rape or incest could be limited to the first 12 weeks of pregnancy.
Yes. Amendment 3 would require parental consent before a non-emancipated minor obtains an abortion, except in a medical emergency when consent cannot be obtained. It would also allow the legislature to provide a judicial consent process.
Yes. Amendment 3 would expressly allow Missouri to regulate abortion providers and facilities to protect women’s health and safety.
Yes. Amendment 3 would continue to protect access to medical care for miscarriages, ectopic pregnancies, and medical emergencies.
Yes. Amendment 3 would prohibit gender transition surgeries, cross-sex hormones, and puberty-blocking drugs for minors, with exceptions for certain medical conditions.