Kim Davis has every right to believe as she does. That's America; people of all colors, creeds and sexual orientations being able to express their different beliefs through the freedom of speech. But what she does not have the right to do is impede on the rights of any other American based on her personal convictions.
I am convinced that most rank-and-file right-wing Christians are sincere and not cynical in the politics they embrace. Yet they have been so egregiously misled that even though they might be sincere, they are sincerely wrong according to the most fundamental moral and ethical imperatives of the Bible.