Obama back on campaign trail

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

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

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

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