I just read his speech, and was glad to see him finally saying more concrete things against Obama. With all of his talk of a "kinder, gentler" type of campaign, I was worried he'd forgotten how to say what's wrong with his opponents.
He's not perfect, but I realize we have a de facto 2 party system. At this point, it should be abundantly clear that a petulant "I'll never vote for him!!" will hurt McCain far more than it hurts Obama. Allowing BHO into office to teach anyone a lesson is foolhardy - all that does is teach dems that they can run even more liberal candidates with impunity.
ETA: Title edited for spelling.