President George W. Bush, right, and his Democratic opponent, Sen. John Kerry of Massachusetts, greet each other at the start of their third and final debate, at Arizona State University in Tempe, Ariz., Wednesday, Oct. 13, 2004. With polls showing the race a virtual tie just three weeks before Election Day, the debate is focusing on the candidates' economic and domestic policies. (AP Photo/J. Scott Applewhite)