Politics

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President Barack Obama speaks at a joint campaign rally with Vice President Joe Biden, left, Tuesday, Oct. 23, 2012, at Triangle Park in Dayton. (AP Photo/Al Behrman)

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President Barack Obama walks across the South Lawn to the White House from Marine One, Tuesday, Oct. 23, 2012, in Washington. (AP Photo/Carolyn Kaster)

Supporters hold banners and a doll as President Barack Obama shakes hands with supporters during a campaign event at Triangle Park in Dayton, Ohio, Tuesday, Oct. 23, 2012, the day after the last presidential debate against Republican Presidential candidate, former Massachusetts Gov. Mitt Romney. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama stops to waves to supporters as he takes the stage during a campaign event at Triangle Park in Dayton, Ohio, Tuesday, Oct. 23, 2012, the day after the last presidential debate against Republican Presidential candidate, former Massachusetts Gov. Mitt Romney. (AP Photo/Pablo Martinez Monsivais)

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Bruce Springsteen ralliesw support for President Barack Obama during a free concert held Tuesday afternoon Oct. 23, 2012 at the nTelos Wireless Pavilion in Charlottesville, Va. (AP Photo/The Daily Progress/Andrew Shurtleff)

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Vice President Joe Biden stops to be photographed with a supporter during a campaign event with President Barack Obama at Triangle Park in Dayton, Ohio, Tuesday, Oct. 23, 2012, the day after the last presidential debate against Republican Presidential candidate, former Massachusetts Gov. Mitt Romney. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama is embraced by a unidentified supporter during a campaign event at Triangle Park in Dayton, Ohio, Tuesday, Oct. 23, 2012, the day after the last presidential debate against Republican Presidential candidate, former Massachusetts Gov. Mitt Romney. (AP Photo/Pablo Martinez Monsivais)

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Democratic candidate for Wisconsin's U.S. Senate seat, U.S. Rep. Tammy Baldwin, participates in a debate against Republican candidate former Gov. Tommy Thompson held at the Wisconsin Institute for Public Policy and Service on the University of Wisconsin Marathon County campus in Wausau, Wis., Thursday, Oct. 18, 2012. (AP Photo/Milwaukee Journal Sentinel, Gary Porter, Pool)

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Republican nominee Mitt Romney may have lost the foreign policy debate Monday, but GOP analysts say he still could benefit from his performance in the long run. (Associated Press)

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Karl Rove’s American Crossroads super PAC and its affiliate, Crossroads GPS, are making their biggest buy yet in this year’s Senate elections, with a new round of ads costing $8 million that will target Democratic lawmakers in eight states. (Associated Press)