A majority on this site misunderstand what drives voting behavior, in both parties, but particularly the Republican party. They seem to think it is an ideological litmus test; it isn't, particularly when it comes to the presidency.
Some of us like our conservatism hot or cold, not lukewarm, especially with respect to the presidency. Frankly, I don't know how you can quaff the tepid gruel you call a political philisophy without vomiting all over your tassel loafers.