Barack Obama

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** FILE ** Republican presidential nominee Mitt Romney and President Obama speak during the first presidential debate, at the University of Denver on Wednesday, Oct. 3, 2012, in Denver. (AP Photo/David Goldman/Eric Gay)

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President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney meet on stage at the start of the first presidential debate in Denver, Wednesday, Oct. 3, 2012. (AP Photo/Charles Dharapak)

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Last-minute stage setup for the first presidential debate between President Barack Obama and Republican presidential nominee Mitt Romney at the University of Denver takes place as seen in a television camera monitor Wednesday, Oct. 3, 2012, in Denver. (AP Photo/J. David Ake)

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Chris Bandrowsky, 20, of Denver, dressed in red, white and blue, gives the thumbs up while having his picture taken at DebateFest at the University of Denver on Wednesday, Oct. 3, 2012, in Denver, before the first presidential debate between President Barack Obama and Republican challenger Mitt Romney. (AP Photo/Chris Schneider)

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Ellen Leslie, left, takes a photo of Danielle Gillespie, right, with cardboard cut-outs of Mitt Romney and President Barack Obama at DebateFest at the University of Denver on Wednesday, Oct. 3, 2012, in Denver. (AP Photo/Chris Schneider)

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In 2008, Sen. John McCain of Arizona, the Republican presidential nominee, takes the microphone from Gayle Quinnell who said she read about Sen. Barack Obama and “that he was an Arab,” at a town-hall meeting at Lakeville South High School in Lakeville, Minn. (Associated Press)

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FILE - In these Sept. 2012, file photos Republican presidential candidate Mitt Romney, left, boards a plane in Denver, Colo, and President Barack Obama gets off a plane in Tampa, Fla., during an intense campaign in competitive states. Obama and Romney each have a specific mission for the string of three debates that starts Wednesday night, Oct. 3, 2012. Obama, no longer the fresh face of 2008, must convince skeptical Americans that he can accomplish in a second term what he couldn't in his first: restore the U.S. economy to full health. Romney, anxious to keep the race from slipping away, needs to instill confidence that he is a credible and trusted alternative to the president, with a better plan for strengthening the fragile economy. (AP Photos)

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President Obama speaks at a campaign event at Farm Bureau Live, Thursday, Sept. 27, 2012, in Virginia Beach, Va. (AP Photo/Pablo Martinez Monsivais)

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As President Obama and Mitt Romney spar inside in their debate at the University of Denver, “Debatefest” will go on outside for six hours on Wednesday. (University of Denver)