With Air Force One in the background, President Barack Obama speaks to supporters during a campaign event on the tarmac at Austin Straubel International Airport in Green Bay, Wis.,Thursday, Nov. 1, 2012. Obama resumed his presidential campaign with travel to key background states of Wisconsin, Colorado, Nevada and Ohio today. (AP Photo/Pablo Martinez Monsivais)

Associated Press
With Air Force One in the background, President Barack Obama speaks to supporters during a campaign event on the tarmac at Austin Straubel International Airport in Green Bay, Wis.,Thursday, Nov. 1, 2012. Obama resumed his presidential campaign with travel to key background states of Wisconsin, Colorado, Nevada and Ohio today. (AP Photo/Pablo Martinez Monsivais)
With Air Force One in the background, President Barack Obama speaks to supporters during a campaign event on the tarmac at Austin Straubel International Airport in Green Bay, Wis.,Thursday, Nov. 1, 2012. Obama resumed his presidential campaign with travel to key background states of Wisconsin, Colorado, Nevada and Ohio today. (AP Photo/Pablo Martinez Monsivais)
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