Only away from polygamy (although practiced by a significant minority of offshoots). Everything else is adhered to, including the Book of Mormon. Enough fodder in there to shoot down any candidacy. Other 'unique' practices includes baptizing everyone into their religion, the living and the dead, whether you wanted it or not. Been some tremendous controversy in recent years over the Mormons doing this to Jewish holocaust victims. Throw in the special undergarments, and other oddities, and a Romney candidacy is DOA.
"Throw in the special undergarments"
Hadn't heard about those - what's that about?
You mean the ones with the Free Masonry symbols, or did they change that when the truth about the Free Masonry influence on Joseph Smith's imagination was exposed?
Maybe JCEccles can answer that question.