I don’t necessarily see any advantage for Huck over Santorum, but then again, this is not my niche of the electorate. There appears to be about 30% of the Iowa Caucus voters who are simply going to vote for someone who emphasizes nothing but social issues. RS got them all in 12, Huck got most of them in 08.
RS is an eastern lawyer, city-slicker Catholic.
Huck is rural, Baptist preacher.
Social issues to some means Gospel issues to others. It’s national revival, not the Supreme COurt.
It's not my niche either, but I have many close friends who are part of this crowd, including some very connected with the Family Leader, etc. There is nearly zero excitement about Santorum running again, but there's definitely interest in Huckabee. But Walker and Cruz (and Ben Carson) have a chance with these voters. I find it to be a strange mentality - it's more like they're looking for a personality cult to join rather than it being only about issues, even social issues. They want someone who "feels" like "one of them" more than anything else, I think.