Republican presidential candidate, Sen. John McCain, R-Ariz., left, and Republican Alaska Gov. Sarah Palin acknowledge supporters after McCain introduced Palin as his Vice Presidential running mate Friday, Aug. 29, 2008 at Ervin J. Nutter Center in Dayton, Ohio. (AP Photo/Kiichiro Sato)
Vice Presidential Candidates Sarah Palin and Joe Biden will take part in their first and only debate in just a few hours.
The stage is set at Washington University for one of the most talked about debates in recent history...Already, 3,100 media credentials have been issued for tonight's showdown. In American politics, it's unusual for VP candidates to play such a role, but in an election this close, the VP will play a major role in who wins the White House.