Obama also heaped criticism and sarcasm on Republican rival John McCain and mocked his promise to fire the head of the Securities and Exchange Commission if elected president.
"I think that's all fine and good but here's what I think," Obama said. "In the next 47 days you can fire the whole trickle-down, on-your-own, look-the-other way crowd in Washington who has led us down this disastrous path.
"Don't just get rid of one guy. Get rid of this administration," he said. "Get rid of this philosophy. Get rid of the do-nothing approach to our economic problem and put somebody in there who's going to fight for you."