We have one at work. He swears up and down he is a Liberal, listening to him talk he is actually a Conservative Libertarian. He wants nothing to do with "conservatives" and will argue to the death the exact opposite of the liberal talking points. I think he will grow out of his attitude the longer he is away from his liberal home, and further from collage.
He just can't agree with the liberals, although he claims to be one.
Sit him down and tell him, bluntly, that Liberals believe in big, intrusive and costly government that thrives on dependency and requires taxation at a level that will eventually destroy his quality of life/standard of living.
Then ask him to tell you why you’re wrong.