President Barack Obama waves to supporters upon his arrival in Green Bay, Wis., Thursday, Nov. 1, 2012, for a quick campaign stop before heading to Las Vegas. (AP Photo/Tom Lynn)

Associated Press
President Barack Obama waves to supporters upon his arrival in Green Bay, Wis., Thursday, Nov. 1, 2012, for a quick campaign stop before heading to Las Vegas. (AP Photo/Tom Lynn)
President Barack Obama waves to supporters upon his arrival in Green Bay, Wis., Thursday, Nov. 1, 2012, for a quick campaign stop before heading to Las Vegas. (AP Photo/Tom Lynn)
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