Re: Values Added: The Year in Religion (Amy Sullivan & Mollie Ziegler Hemingway)
Basically, we Missouri Synod Lutherans detest civil religion, "national deism," and the casual fusion of religion and politics. Huckabee wields it casually. Lutherans have (obvious) historical and (more complex; look up Luther's "2 swords" or Kierkegaard) theological reasons for objecting to it. That prevents Lutherans from getting co-opted, of course, but it also makes us politically irrelevant as a bloc. That might cause a little lingering resentment.
I'm much more of a traditionalist and Burkean than a libertarian (though still where she is on church-state matters), but I believe her reasons for her libertarianism stem from her Lutheranism and her "excuse" (though I'd hardly characterize it that way) for not making Christian compassion a state issue is the standard "civil society does it with more care and with more fiscal responsibility and only helps society as it gets bigger, unlike government" answer.