• Republican presidential candidate Sen. John McCain, R-Ariz., talks about immigration and border issues Wednesday, Aug. 20, 2008 during a town hall meeting at New Mexico State University in Las Cruces, N.M. The La Cruces Sun-News, Shari Vialpando / AP Photo
  • Cindy McCain, left, applauds as her husband, Republican presidential candidate Sen. John McCain, R-Ariz. is introduced at the Annual Veterans of Foreign War Convention, Monday, Aug. 18, 2008, in Orlando, Fla. Mary Altaffer / AP Photo
  • Democratic presidential candidate Sen. Barack Obama, D-Ill., sits in the car as he arrives at downtown Chicago hotel, Friday, Aug. 22, 2008. Alex Brandon / AP Photo
  • Sen. Joe Biden, D-Del., drives up to his home past the news media Wednesday, Aug. 20, 2008 in Greenville, Del. Biden, Indiana Sen. Evan Bayh and Virginia Gov. Tim Kaine are believed to be on Democratic presidential candidate Barack Obama's short list. Bradley C. Bower / AP Photo
  • Republican presidential candidate Sen. John McCain, R-Ariz., center, leaves a Starbucks coffee shop, Friday, Aug. 22, 2008, in Sedona, Ariz. Mary Altaffer / AP Photo
  • Democratic presidential candidate Sen. Barack Obama, D-Ill., smiles as he gets on the bus in Richmond, Va., Thursday, Aug. 21, 2008. Alex Brandon / AP Photo
  • Democratic presidential candidate Sen. Barack Obama, D-Ill., talks diners during a stop at PJ and Company Restaurant Saloon in Reno, Nev., Sunday, Aug. 17, 2008. Alex Brandon / AP Photo
  • Democratic presidential candidate Sen. Barack Obama, D-Ill., speaks at a town hall meeting, Monday, Aug. 18, 2008, at the main library in Albuquerque, N.M. Alex Brandon / AP Photo
  • Virginia Gov. Tim Kaine shakes hands before boarding the bus with Democratic presidential candidate Sen. Barack Obama, D-Ill.,Thursday, Aug. 21, 2008, in Richmond, Va. Alex Brandon / AP Photo
  • Republican presidential candidate, Sen. John McCain, R-Ariz., right, Sen. Mel Martinez, R-Fla., center, and Sen. Lindsey Graham, R-S.C. receive a briefing on tropical storm Fay at the Orange County Emergency Operation Center Sunday, Aug. 17, 2008, in Winter Park, Fla. Mary Altaffer / AP Photo

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