Results from the Iowa Caucuses - Ron Paul vs. Rick Santorum

Coming out of the Iowa Caucuses, three horses are in the race: Ron Paul, Rick Santorum, and Mitt Romney. Of any candidate, Rick Santorum has used some of the strongest language against homosexuality. Ron Paul has used some of the strongest language possible against the centralization of power and big government. Santorum is not principally against big government. That's pretty obvious; he likes socialism. So what gives? Whom would a Christian support for president?