My preacher, David Jordan, made a great point a while back. He more often says these days “Christ follower” instead of Christian. Too many people, including the likes of Dean, call themselves Christians because they think they are suppose to, but not so many actually follow the teachings of Christ.
Try it. Ask a liberal who calls himself a Christian if he follows the biblical teachings of Christ. You’ll probably get a long winded explanation that amounts to a “no.”