McCain would almost certainly do something Hillary could not: push socialist ideas under the guise of "conservatism". Hillary would push those same ideas, but she wouldn't be able to muddle people's understanding of what "conservatism" means the way McCain would. You might not see that as a major concern, but I consider it to be huge.
‘You might not see that as a major concern, but I consider it to be huge.’
Huge is one thing, but effective surrender to an already encroaching enemy is another. And if Conservatism is what I think it is, McCain is hardly capable of destroying it. At the worst, he will prove its truth through failure because there are enough of us around to point that out, At best, he will see the wisodom of adhering to the basic tenets as a means to get even some of what he may want in his heart—like GW— he is a politician when it comes down to it.