Most Mormons aren't born-again. They don't accept Jesus Christ as their Lord and Savior. They follow the teachings of Smith, not Jesus Christ. They think you work your way into heaven. They have some "interesting" beliefs that Christians will not accept.
Personally I disagree with him about about almost everything from abortion to homosexuality.
I like that he's attractive: mentally, emotionally, financially, intellectually etc..
But I don't think he can win. Barbara Bush said there is room for all kinds of religions in the White House. I disagree.
So you would pick a candidate who was Christian if he were liberal over a candidate who was not Christian but Republican?