Ron Paul does not believe he’s had his last shot at the Republican presidential nomination, and will stay in the race in the hopes that the winds might shift in his favor. “You don’t quit because you happen to be behind,” he said on CNBC Monday. “You want to see how you do. And who knows? Maybe somebody will stumble.” Paul argues that his campaign is “very, very viable,” and notes that Romney’s success is a sign that “the system is flawed” and that Mitt is part of a crowd of politicians who are virtually the same regardless of party.