I think Ezra has it exactly right here. Paul is a protest candidate for people who are angry. What he actually believes is not that important. This was illustrated very well by a commenter here. His incoherent insistence on promoting all of the outside the mainstream candidates is a symptom of that position.

Paul’s certainly raising a lot of money and he has plenty of devoted supporters, but it doesn’t appear to be translating into actual support among the general voting population. Kinda fun to watch, though.