If McCain is the nominee, I will support him, albeit with my eyes wide open. He will be vilified by the press as soon as he accepts at the convention.
I don't forget how many things he has done to stab the President in the back. I consider him disloyal to the party and the President on many things, but he has always supported the war and the military, and for that reason alone he would be head and shoulders above ANY democrat who will run.