Obama back on campaign trail

President Obama holds a campaign event on the apron at Austin Straubel International Airport in Green Bay, Wis.

President Obama smiles as supporters cheer at Austin Straubel International Airport in Green Bay, Wis., on Thursday, Nov. 1, 2012, during a quick campaign stop before heading to Las Vegas. (AP Photo/Tom Lynn)

President Obama smiles as supporters cheer at Austin Straubel International Airport in Green Bay, Wis., on Thursday, Nov. 1, 2012, during a quick campaign stop before heading to Las Vegas. (AP Photo/Tom Lynn)

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