Mitt Romney

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns in front of The Golden Lamb Inn and Restaurant in Lebanon, Ohio, Saturday, Oct. 13, 2012. (AP Photo/Charles Dharapak)

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Republican presidential candidate and former Massachusetts Gov. Mitt Romney campaigns at The Golden Lamb restaurant in Lebanon, Ohio, Saturday, Oct. 13, 2012. (AP Photo/Charles Dharapak)

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**FILE** Republican presidential candidate Mitt Romney speaks Oct. 13, 2012, in Portsmouth, Ohio. (Associated Press)

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Republican presidential candidate Mitt Romney campaigns Oct. 13, 2012, at Shawnee State University in Portsmouth, Ohio. (Associated Press)

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Republican presidential candidate Mitt Romney visits the John Quincy Adams room with Sen. Rob Portman (right), Ohio Republican, his wife, Jane, and daughter, Sally, as he campaigns at The Golden Lamb Inn and Restaurant in Lebanon, Ohio, on Oct. 13, 2012. (Associated Press)

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Staff members at The Golden Lamb Inn and Restaurant in Lebanon, Ohio, watch as Republican presidential candidate Mitt Romney campaigns on Oct. 13, 2012. (Associated Press)

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Republican presidential candidate Mitt Romney picks up a baby as he campaigns at The Golden Lamb restaurant in Lebanon, Ohio, on Oct. 13, 2012. (Associated Press)

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The crowd cheers as Republican presidential candidate Mitt Romney campaigns in front of The Golden Lamb Inn and Restaurant in Lebanon, Ohio, on Oct. 13, 2012. (Associated Press)

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Republican presidential candidate Mitt Romney campaigns in front of The Golden Lamb Inn and Restaurant in Lebanon, Ohio, on Oct. 13, 2012. (Associated Press)

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Republican presidential candidate Mitt Romney kisses his wife, Ann, as he leaves the Church of Jesus Christ of Latter-day Saints in Belmont, Mass. on Oct. 14, 2012. (Associated Press)

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Republican presidential candidate Mitt Romney and President Obama wave to the audience during the first presidential debate at the University of Denver in Denver on Wednesday, Oct. 3, 2012. The next debate, town-hall style, will bring Mr. Obama and Mr. Romney to Hofstra University on New York's Long Island on Tuesday, Oct. 16, 2012. (AP Photo/Charlie Neibergall)