A wide majority of Americans back abortion pills, including 71% of young women. The issue could destroy GOP election chances for a generation.

• A new poll highlights the growing political headache Republicans face over abortion.
• Americans overwhelmingly want medicated abortions to remain legal, a Pew survey found.
• Among those in favor are a vast majority of young Americans.

Abortion is quickly becoming an albatross for Republicans, turning a once-reliable way to drive voter turnout into a major problem for the GOP.