Part of Herman Cain's appeal to GOP presidential primary voters was that he seemed to have more street cred with social conservatives than the putative front runner, former Massachusetts Gov. Mitt Romney. Doubts about Romney have helped fuel Cain's recent rise in the polls, putting him in a virtual dead-heat with Romney. But in an interview Wednesday night with CNN's Piers Morgan, Cain raised some new questions about his stance on social issues. When Morgan asked the former Godfather's Pizza CEO about his beliefs on abortion and contraception, Cain said he believes life begins at conception and that he supports...