I think you’d find Santorum is still not very popular with Catholics. He seems to be most popular with Evangelicals, although that’s perhaps too broad a definition. But he’s definitely not a winner among Catholics, even though he is a Catholic.
Yeah, looking at his devastating ejection from his Senate seat, it was the usual break down, white Evangelicals for him at 71%, white Protestants 55%, all Protestants including blacks 49%, and white Catholics at 42%.
He got 39% of the female vote.