Too Long on the Trail

I respect John McCain a lot. Probably much more now than I will after the general election, but at the moment I still respect him a great deal. I'm saying that because I am not posting this video in an attempt to point and laugh at McCain and say "wow he really is taking the Bush legacy to heart, he's a bumbling mess just like W." The campaign trail is a psychologically and physically brutal experience for the candidates, but so is being president. If McCain keeps to slip as he gets more and more fatigued from this process, what kind of president could he be?