Voters in three states will consider ballot initiatives on abortion this Fall. The most aggressive is in South Dakota, where voters will consider a virtual ban (with exceptions for rape, incest, and threats to the mother's life). Anti-abortion activists hope to use the law as the basis for an eventual Supreme Court challenge to Roe v. Wade. Meanwhile, California voters will consider a parental notification requirement, and Coloradans will consider whether to define "person" as "any human being from the moment of fertilization." All three will be worth watching.