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

Singer Bruce Springsteen performs at a rally for Democratic Presidential candidate Sen. Barack Obama (D-IL) in front of Philadelphia City Hall in Philadelphia October 4, 2008. (UPI Photo/John Anderson)

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

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

Democratic presidential candidate Sen. Barack Obama (D-Ill) speaks during a campaign stop in Asheville, North Carolina on October 5, 2008. (UPI Photo/Nell Redmond)