Gary Johnson, Libertarian.
I would've voted for Ron Paul, if he would've won the GOP nomination, but that was entirely rigged. Changing votes, zeroing out votes, ignoring votes, ballot stuffing, having caucus chairmen arrested on bogus charges (St. Charles, MO, it was for trespassing at the caucus!).
Gary Johnson is on the ballot in all 50 states, so he has as much chance as the other two candidates, all other things being equal.
I vote for Gary Johnson, because he is the only candidate who will stop all Corporate Party wars of greed and bring all the troops home. He's the only candidate who will reduce the size of government and slash government spending, enough to eliminate personal income tax and the IRS. He is the only candidate who will restore the Constitution of the United States, rather than trash it (which is treason). He is the only candidate who could possibly save us from the $16+ Trillion national debt Bubble from popping, because of the cuts he plans. He is the only candidate who will restore the liberties the previous two presidents have eliminated. He is the only candidate who will restore the meaning of what America means -- based on the liberties afforded us by the Constitution. Without that document being upheld, we may as well call America the "Soviet Union" or "Nazi Germany."