One is the fact that he does not waffle on keeping science in science classrooms, as opposed to thinly veiled theology:
“I’m a Christian, and I believe in parents being able to provide children with religious instruction without interference from the state.
But I also believe our schools are there to teach worldly knowledge and science. I believe in evolution, and I believe there’s a difference between science and faith. That doesn’t make faith any less important than science.
It just means they’re two different things. And I think it’s a mistake to try to cloud the teaching of science with theories that frankly don’t hold up to scientific inquiry.”
On this, as on gay rights, he is the only candidate consistently right.
h/t to Millard Fillmore's Bathtub