Abortion rights advocates prevailed on seven ballot measures across the U.S. in Tuesday's election and lost on three.The losses are the first on statewide reproductive rights ballot measures anywhere in the U.

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

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.