Barack Obama

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Republican presidential candidate, former Massachusetts Gov. Mitt Romney, second from left, and his wife Ann, left, sits in a holding room with his family before he participates in the third presidential debate with President Barack Obama. (AP Photo/ Evan Vucci)

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Republican presidential nominee Mitt Romney and President Barack Obama react to moderator Bob Schieffer during the third presidential debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Charlie Neibergall)

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The sun sets ahead of the presidential debate between Republican presidential candidate, former Massachusetts Gov. Mitt Romney and President Barack Obama, at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/David Goldman)

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Workers pose for a photo with a life-sized cutout of President Barack Obama at a presidential debate fair on the campus of Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla., where President Barack Obama and Republican presidential candidate and former Massachusetts Gov. Mitt Romney will hold their final debate. (AP Photo/Eric Gay)

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Cutouts of President Barack Obama and Republican presidential candidate, former Massachusetts Gov. Mitt Romney, sit behind an AARP display before the candidates' final debate. (AP Photo/Charlie Neibergall)

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Republican presidential nominee Mitt Romney, left, and President Barack Obama make their points to moderator Bob Schieffer during the third presidential debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/David Goldman)

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In this photo combo, Republican presidential nominee Mitt Romney, left and President Barack Obama face each other during the third presidential debate with President Barack Obama at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Eric Gay, David Goldman)

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Moderator Bob Schieffer, center, watches as Republican presidential candidate, former Massachusetts Gov. Mitt Romney and President Barack Obama shake hands before the start of the last debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Pablo Martinez Monsivais)

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Ann Romney arrives for the third presidential debate between President Barack Obama and Republican presidential nominee Mitt Romney at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Eric Gay)

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Moderator Bob Schieffer, right, watches as President Barack Obama, center, shakes hands with Republican presidential nominee Mitt Romney during the third presidential debate at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Eric Gay)

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Moderator Bob Schieffer addresses the audience before the third presidential debate between President Barack Obama and Republican presidential nominee Mitt Romney at Lynn University, Monday, Oct. 22, 2012, in Boca Raton, Fla. (AP Photo/Eric Gay)

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President Barack Obama is surrounded by Secret Service agents as he greets women who were on the riser behind him, after he spoke about choice facing women in the election during a campaign event at George Mason University, in Fairfax, Va., Friday, Oct. 19, 2012. (AP Photo/Susan Walsh)