I will not vote for him under any circumstances. I believe that God wants me to act in a righteous manner and that means not casting my vote for an heretical, anti-freedom liar and cheat regardless of the outcome. BTW, his religion makes a huge difference to me. The LDS church takes the truth of my Savior Jesus Christ and twists it into an insane comic book with Nazi overtones.
I've read the Bible and don't expect things to get any better than they are now for quite a while - just the opposite. However, I've also read the back of the Book and know that Christ wins in the long run. That makes all the difference.
The Republican establishment is certainly taking a big risk with Romney. They are potentially alienating a sizable portion of their voting bloc - the evangelical Christian vote. They are hoping that the indepedent vote will overcome those Christians who decide to stay out of the race. If America was like Massachussetts, their political impulses would be correct from a strict political point of view, but I do not believe that the Northeast is indicative of the rest of the country, nor even of the evangelical vote there.