You either are or you aren't what? You think there's only one kind of conservative?
Clearly people within the Republican leadership disagree with you.
Anyway, being conservative is a way of life IMO. You might do one or two things different but overall, what kind of person are you is determined by your actions, but why is it so important that he has to be a conservative ? Why can't you just say he is a liberal Republican and be ok with that? Why do we need to be convinced?