An interesting exchange from Deborah Solomon's interview with Charlie Crist in the NY Times Magazine:

Is it fair to describe you as socially progressive? I think it is fair to describe me as a common-sense Republican.

Which implies that some Republicans lack common sense.
That's possible.

You have supported stem-cell research, unlike most Republicans.
I do support that. I think it is common sense to pay attention to what is happening in science. My father is a physician, my sister is a physician and I try to be enlightened on things that might extend and create productive life.