If Ron Paul wins the nomination, I'll vote for him... and I'll feel damn good about it when I'm driving home from the polls.
If it's Romney or Santorum vs. Obama, I'll vote 3rd party (again).
I think there are people like me from both major parties who are fed up.
In response to the comments on Ron Paul's "presidentialness" -- I can't argue with what you guys are saying, but I think it's sad that Paul doesn't enjoy the same reform-minded, broad-based populist support that swept Obama into office (considering that Ron Paul is actually a populist and a reformer).