If Alan Keyes runs with the Constitution Party, my conscience will allow me to vote for him IF John McCain does not pick an acknowledged, significant, viable, CONSERVATIVE VP running mate.
If he were the CP nominee, and were on enough state ballots in the US to significant enough theoretical electoral votes to capture the Presidency, and despite his polling numbers, I have to admit that I would indeed vote for him as the LEAST of THREE EVILS: McCAIN, CLINTON or KEYES.