He was doing just fine at his lovefest in the Twin Cities, but then Senator John McCain started talking about cutting taxes. 
As I wrote earlier, he was palatable because he was talking about the least offensive tax, a corporate tax cut. As he takes a more offensive position by generalzing cuts, especially in light of news like the Federal Highway Fund running out of money, now I’m giving Obama the win for the economy, and McCain loses personality points for pandering.