The Campaign Trail - Sept. 29 - Oct 5 (32 images)

Democratic vice presidential nominee Sen. Joe Biden (D-DE) participates in the vice-presidential debate with Republican vice presidential nominee, Alaska Gov. Sarah Palin at Washington University in St. Louis, Missouri, on October 2, 2008. (UPI Photo/Brian Kersey)

Aston Hitchcock, 20, (L) plays a giant Rock 'Em Sock 'Em Robots game with the faces of Democratic vice presidential nominee Sen. Joe Biden (D-DE) and Republican vice presidential nominee, Alaska Gov. Sarah Palin (R) taped to the robots' faces at Washington University in St. Louis, Missouri, on October 2, 2008. The vice presidential debate between Palin and Biden is scheduled to take place later in the evening. (UPI Photo/Brian Kersey)

Republican Presidential candidate Sen. John McCain (R-AZ) (L) walks with Sen. John Thune (R-SD) (R) into the Senate Chamber on Capitol Hill in Washington on October 1, 2008. The Senate convened for an evening session and passed the $700 billion bailout of the financial industry. (UPI Photo/Yuri Gripas)

Obama supporter Glenda Major of St. Louis holds a sign on the campus of Washington University in St. Louis, Missouri, on October 2, 2008. The vice presidential debate between Republican vice presidential nominee, Alaska Gov. Sarah Palin and Democratic vice presidential nominee Sen. Joe Biden (D-DE) is scheduled to take place later in the evening. (UPI Photo/Brian Kersey)