Pat Robertson was responding to the following:
Karl Rove all but disqualified Herman Cain’s chances for the GOP nomination because he said a family should have choice when deciding whether to have an abortion if a minor girl has been raped. For most people, this is considered reasonable.
Cain backed off from that position, but Karl Rove said it was too late. For the record, Ronald Reagan believed in exceptions for rape and incest.
Cain, in deference to the purists, has changed his position back and forth. This is what Robertson was referring to.
Yeah. Which led to a hundred thousand babies a year killed in CA before Reagan left the Governor's office. Which led to Reagan saying that was the worst mistake he ever made. Which led to Reagan's personhood, Fourteenth Amendment position, which remains in the GOP platform after twenty seven years, although most of the GOP pretends it doesn't.