Missouri is the most populous state where a ballot measure could roll back a current ban on abortions at all stages of pregnancy.

Voters passed Amendment 3 to enshrine reproductive health care rights, including the right to abortion and birth control, in the Missouri Constitution, reversing the state’s near-total ban on abortion implemented after Roe v. Wade was overturned in 2022.

This amendment would establish a constitutional right to reproductive rights and would remove Missouri's ban on abortion.