Missouri

A Second Vote on Abortion

In November 2024, Missouri voters approved Amendment 3, a constitutional amendment creating a right to “reproductive freedom” in the Missouri Constitution. The amendment overturned Missouri’s prohibition on abortion and shifted many abortion-related policy questions from the legislature to the courts.

Now, Missouri voters will be asked to revisit that decision.

In November 2026, Missourians will vote on a new constitutional amendment that would repeal key portions of Amendment 3 and restore many of the protections that existed before its passage. The proposal was placed on the ballot by the Missouri Legislature following concerns that Amendment 3 invalidated longstanding safeguards for women, girls, parents, and unborn children.

Missouri’s Current Abortion Laws

Missouri’s abortion laws remain the subject of ongoing litigation following the passage of Amendment 3.

The 2024 amendment established a constitutional right to abortion prior to fetal viability. The amendment also limits the state’s ability to regulate abortion after viability unless the government can satisfy a heightened legal standard.

As a result, many of Missouri’s previous abortion regulations have been challenged in court, and the scope of permissible abortion restrictions continues to evolve through litigation.

What Did Amendment 3 Actually Do?

When Missouri voters approved Amendment 3 in 2024, they did more than overturn the state’s abortion ban.

The amendment added a new right to “reproductive freedom” to the Missouri Constitution. It states that the government may not deny, interfere with, delay, or otherwise restrict a person’s exercise of reproductive freedom unless the restriction satisfies a heightened legal standard.

The amendment protects decisions involving:

Abortion
Contraception
Prenatal care
Childbirth
Miscarriage care
Fertility treatment

Supporters argued that the amendment was necessary to restore abortion access after the Dobbs decision and to protect personal medical decision-making from government interference.

Opponents argued that the amendment went far beyond overturning Missouri’s abortion ban. They warned that placing abortion rights in the state constitution could jeopardize parental involvement laws, informed consent requirements, health and safety regulations, and other protections that had existed for decades.

Because constitutional rights generally receive greater legal protection than ordinary statutes, many abortion regulations that were previously enacted by the legislature became vulnerable to legal challenge after Amendment 3 passed.

As a result, courts—not elected lawmakers—have increasingly been asked to determine which abortion regulations remain enforceable and which violate the newly created constitutional right to abortion.

The 2026 amendment asks Missouri voters a fundamental question: Should the state restore many of the protections and regulations that existed before the 2024 abortion amendment?

Timeline: How Missouri’s Laws Changed

2019 – Missouri Enacts the Missouri Stands for the Unborn Act

Missouri adopted one of the nation’s strongest pro-life laws, including a trigger ban that would take effect if Roe v. Wade were overturned.

June 2022 – Dobbs Decision

The U.S. Supreme Court overturned Roe v. Wade.

Missouri’s trigger law immediately took effect, protecting unborn children throughout pregnancy except in medical emergencies.

November 2024 – Amendment 3 Passes

Missouri voters approved Amendment 3 by a narrow margin.

The amendment created a constitutional right to reproductive freedom, including abortion before viability, and significantly restricted the state’s ability to regulate abortion.

2025 – Legislature Refers New Amendment to the Ballot

Concerned about the impact of Amendment 3 on parental rights, informed consent, health and safety regulations, and protections for unborn children, Missouri lawmakers approved a new constitutional amendment for voter consideration in 2026.

November 2026 – Missouri Voters Decide Again

Missourians will vote on whether to keep the Amendment 3 framework or replace it with a constitutional amendment restoring many of Missouri’s former abortion protections.

What Is on the 2026 Ballot?

The proposed 2026 amendment would repeal the constitutional right to abortion established by Amendment 3 and replace it with a framework that:

Allows abortion in cases of medical emergency.
Allows abortion for rape and incest during the first twelve weeks of pregnancy.
Allows abortion in certain cases involving fetal anomalies.
Permits the legislature to regulate abortion providers and facilities.
Restores parental consent requirements for minors.
Restores informed consent protections.
Prohibits most public funding of abortions.

Supporters argue that the amendment would restore safeguards that existed before Amendment 3 passed.

Opponents argue that the proposal would effectively reinstate Missouri’s abortion ban and overturn the decision voters made in 2024.

What Protections Were Affected by Amendment 3?

Many Missourians voted for Amendment 3 believing it would address difficult medical situations and expand access to abortion in limited circumstances.

However, opponents argued that the amendment’s broad language threatened a number of existing protections.

Parental Involvement

Missouri historically required parental consent before a minor could obtain an abortion.

Critics of Amendment 3 argued that constitutionalizing abortion rights would place parental involvement laws at risk and invite legal challenges to protections designed to keep parents informed about significant medical decisions involving their children.

Informed Consent

Missouri previously required women to receive information about fetal development, abortion risks, available alternatives, and other medical considerations before an abortion.

Opponents argued that Amendment 3 could undermine these protections by making future regulations vulnerable to constitutional challenge.

Health and Safety Standards

Missouri maintained regulations governing abortion facilities and providers.

Supporters of the 2026 amendment argue that these regulations are necessary to protect women and ensure accountability when complications occur.

What Does Abortion Until Viability Mean?

The 2024 Amendment 3 protects abortion before fetal viability.

While viability is often discussed as a legal concept, it is important to understand what development looks like during this period.

Development at 20 Weeks

By 20 weeks:

All major organs have formed.
The baby’s heart has been beating for months.
Fingers, toes, and fingerprints are fully developed.
The baby can swallow, yawn, stretch, and respond to touch.
Parents often learn the baby’s sex during the routine anatomy ultrasound.

Development at 22 Weeks

By 22 weeks:

Eyelashes and eyebrows are visible.
The baby can hear sounds from outside the womb.
Sleep and wake cycles begin to emerge.
The lungs continue to mature.
Some babies born at this stage have survived with intensive medical care.

How Are Abortions Performed Later in Pregnancy?

Abortions performed during the second trimester are typically conducted using a procedure known as dilation and evacuation (D&E).

The procedure generally involves:

Dilating the cervix over a period of hours or days.
Using suction and surgical instruments to remove the fetus and pregnancy tissue from the uterus.
Because the fetus is significantly larger at this stage of development, the procedure often involves removing fetal remains in multiple pieces.
Examining the remains afterward to ensure that all fetal tissue has been removed.

Questions Every Missourian Should Ask

What did Amendment 3 actually change?
What protections existed before Amendment 3?
How are abortion complications tracked and reported?
What happens when women seek emergency care after taking abortion pills?
What safeguards exist for minors facing pressure or coercion?
What information should women receive before an abortion?
Should courts or elected lawmakers determine abortion policy?
What protections should exist for unborn children capable of surviving outside the womb?

Why This Matters

The debate in Missouri is no longer simply about whether abortion should be legal.

The question before voters is whether the constitutional framework adopted in 2024 should remain in place or whether safeguards involving parental rights, informed consent, health and safety standards, and protections for unborn children should be restored.

Regardless of one’s position on abortion, understanding what Missouri law currently allows—and what the 2026 amendment would change—is essential for making an informed decision at the ballot box.

What Changed?

Since Amendment 3 passed, Missouri has experienced a significant shift in abortion policy.

A constitutional right to reproductive freedom was added to the Missouri Constitution.
The state’s near-total abortion ban was invalidated.
Existing abortion regulations became vulnerable to legal challenge.
Courts became responsible for determining the validity of many abortion-related laws.
Ongoing litigation continues to shape the future of abortion regulation in Missouri.

Supporters view these changes as restoring abortion access and protecting reproductive freedom. Opponents argue they have weakened safeguards that once protected women, girls, parents, and unborn children.

Regardless of one’s position, Amendment 3 fundamentally changed Missouri’s abortion laws and set the stage for the 2026 vote that will once again ask Missourians what protections they want their laws to provide.