Their reaction underscores that Republicans have risked overplaying their hand with severe state laws that they hope will prod the Supreme Court, with its ascendant conservative majority, to strike down Roe v. Wade, the 1973 decision that legalized abortion. It also illustrates the way that those statutes are forcing the GOP to struggle over how to satisfy its core anti-abortion supporters without alienating the vast majority of voters averse to strictly curbing abortion.