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

A Sarah Palin look alike takes a picture a she awaits the arrival of Republican vice presidential candidate, Alaska Gov. Sarah Palin at a rally in Carson, California on October 4, 2008. Palin accused Democrat Barack Obama of "palling around with terrorists" because of an association with a former '60's radical, stepping up an effort to portray Obama as unacceptable to American voters. (UPI Photo/Jim Ruymen)

Singer Bruce Springsteen smiles as he works his guitar while performing in downtown Philadelphia October 4, 2008. Some 50,000 gathered on Ben Franklin Blvd. for the Obama campaign sponsored "Get Out The Vote" rally and concert. (UPI Photo/John Anderson)

Republican presidential candidate Sen.John McCain (AZ) gestures at a town hall meeting in Denver on October 2, 2008. (UP(Photo/ Gary C. Caskey)

A supporter awaits the arrival of Republican vice presidential candidate, Alaska Gov. Sarah Palin at a rally in Carson, California on October 4, 2008. Palin accused Democrat Barack Obama of "palling around with terrorists" because of an association with a former '60's radical, stepping up an effort to portray Obama as unacceptable to American voters. (UPI Photo/Jim Ruymen)