Speaking on "Good Morning America" from Invesco Field, the Minnesota gov and McCain short-lister aggressively skewers Obama on several fronts. Click above to watch.
"When you shut the teleprompter off, there's not much else there."
Says Obama's not ready for the presidency and Bill Clinton, Biden and others are being "hypocritical" for saying he is.
Slams Invesco's "emperor-like" backdrop and says of the Senator's campaign-- "as with the facade, there's not much behind it."
