President Barack Obama waves to supporters after speaking at a campaign event in Denver, Wednesday, Aug. 8, 2012. (AP Photo/Pablo Martinez Monsivais)

Associated Press
President Barack Obama waves to supporters after speaking at a campaign event in Denver, Wednesday, Aug. 8, 2012. (AP Photo/Pablo Martinez Monsivais)
President Barack Obama waves to supporters after speaking at a campaign event in Denver, Wednesday, Aug. 8, 2012. (AP Photo/Pablo Martinez Monsivais)
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