When it goes into effect in December, Amendment 3 will protect abortion up to what’s known as fetal viability — which is about 24 weeks of pregnancy.

Last night, Missouri was among the ten states where voters cemented reproductive rights in state constitutions. More than two years after the US Supreme Court overturned Roe v. Wade and ended the federal constitutional right to an abortion,

Amendment 3 places language in the Missouri Constitution legalizing abortion up to fetal viability, which is usually around 24 weeks. Now that the amendment passed, abortion rights proponents plan to file lawsuits to strike down the state’s near-total ban.