 This is coming from a new Associated Press NORC poll. A solid majority of Americans, more than 8 in 10, say abortion should be legal in extreme circumstances, such as if the patient's life would be endangered. And 8 in 10 also support legal abortion of a pregnancy caused by rape or incest or if an anomaly would prevent the child from surviving outside of the womb. Some 3 in 10 of those polled think abortion should be illegal in most or all cases.