You may also note that 3rd Parties don't win elections in normal times. However if the economy tanks it is not impossible for Paul to win on his economic program.
Actually, I think this may be his strategy for winning the GOP nomination. Dr. Paul realizes that 3rd parties never win. But he also realizes that his poll numbers are way to low to have a chance of winning the GOP nomination by conventional means. So there are three things to pay attention to:
First, this is why getting RP supports to "infiltrate" and become delegates is so important. (I'm not talking about the obvious RP-pledged delegates -- I mean unpledged delegates or delegates that may have to be committed to another candidate on the first ballot.) If there is no outright majority at the convention, you have a "brokered convention" -- all commitments are off after the first ballot. And if our "stealth delegates" are there in sufficient numbers, hmm....
Second, since this "stealth strategy" only works in a brokered convention, we have to make sure that happens. (So for now, go Huck!, go Mitt!)

This would be a good time for Ron to go on the attack against McCain.
Third, the party and the public would have to be behind this at least somewhat to pull this off. So we need to
keep spreading the word, even after the primaries go by. But realistically, this may not be enough to turn public opinion fast enough (for this election),
unless we enter an economic (or foreign) crisis that dramatically proves Ron right. We all know that everything he predicted would happen is coming soon, but it isn't full-blown enough now for the public to question the establishment on a fundamental level. But when it happens, all bets are off.
In summary, the most important things we can do are to get involved in the GOP, keep canvassing and donating to the campaign, and keep spreading the message of freedom and how it has been betrayed, so when it hits the fan, people will remember us and what we have to say.