McCain will get the nod for the Republican nomination if the Swiftboaters fall asleep at the helm this time around. His voting record, and 'flip-flopping' probably doesn't mean that much in terms of the nomination because there are so few viable Condidates.
McCain would be my favorite "conservative," and Obama would be my favorite "liberal." I sincerely hope it comes down to those two, because they seem to be the most balanced of the available choices so far.
But I'm going to have to qualify my statements with the fact that I've yet to do a lot of research on either of them.