Mitt Romney's LDS faith isn't as much of a problem for Evangelical Christians as many would lead you to believe.
The New Republic's Ed Kilgore says, as long as a candidate is on the same page in regards with same-sex marriage and abortion as the Christian right, the group won't given them much trouble. That means any theological differences will likely be minor at the ballot box.
Actually, argues Kilgore, the bigger problem for evangelicals is mainstream Protestantism, not Mormonism.
Seen from this perspective, Romney’s Mormon faith is as much a positive factor as a negative one. Indeed, another prominent evangelical critic, the homophobic American Family Association’s Bryan Fischer, has said repeatedly that his biggest problem with Romney is that “he’s not Mormon enough”—meaning, he has been insufficiently faithful to LDS teachings on abortion and homosexuality.
It’s still possible that the unfamiliar nature of Mormon doctrine may have a subtle effect on evangelical enthusiasm for Mitt. But any evangelical distrust of Mormon theology pales beside the evangelical distrust of mainstream Protestantism—which happens to be the strand of Christianity that Barack Obama belongs to. This attitude can be seen in Rick Santorum’s dismissal of mainline U.S. Protestants as “gone from the world of Christianity”—a comment from 2008 that came to light during the heat of this year’s primary season. While Santorum’s statement was widely criticized, it’s a broadly held, even axiomatic, view for many conservative evangelicals and Catholics. Indeed, conservative minorities in the mainline denominations (most notably Episcopalians) have become accustomed to accusing mainline leaders of heresy and apostasy.