Politics

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Republican presidential candidate Mitt Romney and Sen. Chuck Grassley (right), Iowa Republican, wave before Mr. Romney spoke at a campaign stop at the Koch family farm on Tuesday, Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Charlie Neibergall)

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Republican presidential candidate Mitt Romney shakes hands during a campaign rally on Tuesday, Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney speaks during a campaign rally on Tuesday, Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney greets supporters after speaking at a campaign stop at the Koch family farm on Tuesday, Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Charlie Neibergall)

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Supporters wave flags during Republican Mitt Romney's campaign stop on Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Charlie Neibergall)

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Republican presidential candidate Mitt Romney speaks during a campaign stop at the Koch family farm on Tuesday, Oct. 9, 2012, in Van Meter, Iowa. (AP Photo/Charlie Neibergall)

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Republican presidential candidate Mitt Romney asks his staff for their orders after stopping at a Wendy's restaurant on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney walks into a Wendy's restaurant during a surprise stop on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney (center) and New Jersey Gov. Chris Christie (left) arrive at a campaign rally after being introduced by Ohio Lt. Gov. Mary Taylor on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney (left) is introduced by New Jersey Gov. Chris Christie (right) as Ohio Lt. Gov. Mary Taylor watches during a campaign rally on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney campaigns with New Jersey Gov. Chris Christie (center) and Sen. Rob Portman (right), Ohio Republican, in Cuyahoga Falls, Ohio, on Tuesday, Oct. 9, 2012. (AP Photo/Mark Stahl)

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Republican presidential candidate Mitt Romney speaks during a campaign stop on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney talks with supporters during a campaign stop on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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Republican presidential candidate Mitt Romney shakes hands during a campaign rally on Tuesday, Oct. 9, 2012, in Cuyahoga Falls, Ohio. (AP Photo/Evan Vucci)

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U.S. Secretary of Defense Leon E. Panetta attends a meeting of NATO defense ministers at the alliance's headquarters in Brussels on Wednesday, Oct. 10, 2012. (AP Photo/Virginia Mayo)

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Turkish Chief of Staff Gen. Necdet Ozel (right) listens Oct. 9, 2012, to a commander during his tour of the military along the border with Syria in Hatay, Turkey. (Associated Press/Turkish Military)