Yeah, he got a convention bounce, and his lead coming out of the convention was something like 15 points, an absurd outlier. I don't think there was ever any doubt that Bush Sr. was going to win that election. Gore had a 14-point lead coming out of LA. Which is why I'd be mightily concerned if the best McCain can do is make the race statistically dead even. It goes to show you how meaningless national polls are right now. If McCain expands his lead from dead even and +1 to up 7 or 8 points in the polls 3 weeks from now, then it's time for Obama to panic.
Oh yeah, you're a blind partisan if you see that as anything other than a cynical sop to the right. It doesn't really matter though what you or I think. The only audience that matters is undecideds, and the kind of person who still hasn't made up his mind isn't going to do it now on the basis of a big VP splash. There's still no evidence that she's helping him do anything other than shore up his base.