Missouri voters will decide on Nov. 3 whether to take back the abortion rights they wrote into the state constitution two years ago. The Republican-led legislature put Amendment 3 on the ballot in May 2025. It would repeal the 2024 amendment and ban most abortions again 2. Early voting is already underway 2.
In 2024, voters approved the reproductive-rights amendment with 51.6% of the vote 2. That made Missouri the first state to overturn an abortion ban at the ballot box 1. The 2024 amendment protects abortion until fetal viability, which is generally around 23 to 24 weeks of pregnancy 5.
What the new amendment would do
The new Amendment 3 would allow abortion only in medical emergencies, in cases of certain fetal anomalies, and in cases of rape or incest during the first 12 weeks of pregnancy 1. It would let the legislature pass new laws regulating abortion 2. It would also require parental consent for minors and write a ban on gender-transition procedures for minors into the constitution 5.
State law already bans gender-transition care for minors. A 2023 law did that 5. Under that law, the ban on surgeries is permanent, while the ban on treatments such as puberty blockers and hormone therapy is set to expire in August 2027 2.
The way the vote works is simple but easy to mix up. A YES vote repeals the 2024 protections and puts the ban in place. A NO vote keeps the 2024 protections 5. If the amendment passes, it would take effect 30 days after the election 1.
The pitch and the pushback
The amendment's sponsor, state Rep. Ed Lewis, a Republican from Moberly, calls it a "middle of the road" proposal 2. Asked about the 12-week limit for rape and incest survivors, Lewis acknowledged that position would be harder to defend 2.
Opponents say the measure ignores a decision voters made less than two years ago 5. Mallory Schwarz is executive director of Abortion Action Missouri and a spokesperson for Stop the Ban, the campaign working to defeat the measure 2.
The bottom line is overturning the will of the people is not middle of the road
Rep. Jaclyn Zimmermann, a Democrat from Manchester, said the rape and incest rules ask too much of victims in too little time 2. "How are we going to do that in a small period of time?" she asked 2.
They don't believe them and it's so difficult for women to prove a rape, anyways.
Lawmakers took out a proposed requirement that victims report a rape to police before the measure went to the ballot 1. Critics say the 12-week deadline may still be too short 1.
Would the exceptions actually work
A Missouri Independent report this week found that some doctors, lawyers and patients who lived under Missouri's earlier ban doubt the exceptions would work in practice 1. After the state's 2022 near-total ban, some doctors saw patients arrive sicker, with infections, blood clots or other complications 1. State health data show that all 46 abortions performed in Missouri hospitals last year were listed as medical emergencies 1.
Attorney Molly Duane said the proposed language "is an absolute disaster zone." 1 Michael Wolff, a former chief justice of the Missouri Supreme Court, said clinics would probably have to stop offering abortions if the amendment passes 1.
if I were advising the abortion providers, they would have to stop.
Supporters disagree. Amanda Sanders, a spokeswoman for the Yes on 3 campaign, said: "This is about what happens to a woman if something goes wrong." 1 Missouri Attorney General Catherine Hanaway called the No on 3 campaign's messaging "a flat out lie." 1
For now, care is available in the state. In June, Jackson County Judge Jerri Zhang struck down dozens of abortion regulations, including a 72-hour waiting period. That ruling is under appeal 1. A June 2026 court ruling also brought medication abortion back to Missouri for the first time since 2018 7. In 2025, Missouri providers performed 3,550 abortions, up 53.5% from 2024. More than 11,500 Missourians still went out of state for care, mostly to Illinois and Kansas 7.
Republicans make it a top priority
Republican leaders are putting their names behind the effort. On Oct. 23, U.S. Rep. Eric Burlison of southwest Missouri said Amendment 3 matters more than any single race on the ballot. He also said he would like it to go further 3.
This is the most important thing that I think that we can do on Election Day.
Former Attorney General Andrew Bailey, who later served as co-deputy director of the FBI, has filed paperwork to form a PAC called Vote Yes On Amendment 3 6. Missouri First Lady Claudia Kehoe's Her Health, Her Future PAC is also backing the measure 6. That PAC got $2.9 million from a new nonprofit that does not have to disclose its donors. The PAC has raised $5.3 million since it launched 4.
Stop the Ban had raised more than $25.7 million as of mid-October 4. That includes nearly $12 million from the Fairness Project, a nonprofit based in Washington, D.C. 4. The race looks close. An August poll found 43% of likely voters for the measure, 44% against and 13% undecided 3.
That matters because Missouri isn't the only state voting on this. Voters in Idaho, Nevada and Virginia will decide measures that would protect abortion rights 7. Missouri is the only state where the measure on the ballot would take rights away. The pattern is clear: Republicans in the state legislature did not accept the 2024 result, so they sent the question back to voters, this time packaged with a separate issue about transgender minors.
The Record
- Missouri voters approve a reproductive-rights amendment with 51.6% of the vote, overturning the state's abortion ban 12.
- Former Attorney General Andrew Bailey files paperwork to form the Vote Yes On Amendment 3 PAC 6.
- Stop the Ban reports raising more than $25.7 million to defeat Amendment 3 4.
- Rep. Eric Burlison calls Amendment 3 'the most important thing' Republicans can do on Election Day 3.
- Missouri voters decide whether to repeal the 2024 abortion-rights amendment 2.
Sources
- Missouri Independent (States Newsroom), “Missouri's Amendment 3 would allow some abortions. Whether women could get them is unclear.” (2026-10-21). newsfromthestates.com/article/missouris-amendment-3-would-al
- St. Louis Public Radio, “Backers pitch Amendment 3 as 'middle of the road' abortion ban, opponents say it disrespects voters” (2026-10-23). stlpr.org/government-politics-issues/2026-10-23/amendment-3-
- Newstalk KZRG, “Burlison says Missouri abortion vote is more important than any political race” (2026-10-23). newstalkkzrg.com/2026/10/23/burlison-says-missouri-abortion-
- KCUR / Missouri Independent, “New Missouri anti-abortion nonprofit pours $2.9 million into Amendment 3 campaign” (2026-10-18). kcur.org/health/2026-10-18/missouri-amendment-3-donations-he
- KCTV5, “Missouri Amendment 3 would repeal abortion rights voters approved in 2024” (2026-10-16). kctv5.com/2026/10/16/missouri-amendment-3-would-repeal-abort
- ABC17 News, “Bailey starts his own Amendment 3-supporting PAC” (2026-10-14). abc17news.com/politics/vote-2026/2026/10/14/bailey-starts-hi
- Ms. Magazine (Guttmacher Institute), “Abortion Rights Are on the Ballot in Four States in 2026” (2026-10-23). msmagazine.com/2026/10/23/abortion-rights-ballot-measures-20
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