Although Squiggy is right that the one is identifiably better than the other, in my opinion he is not ENOUGH better to be worth a large personal effort on my part. So although I continue to stand against some of the obvious smears, I will not be campaigning for him in Virginia. His 180 on FISA indicates that he is a full member of The Invertebracy.
Meanwhile, although McCain has done his best to disguise himself, he is in fact Not Bush. Therefore, the difference between the two does not exceed epsilon for my purposes.