FILE - This Oct. 22, 2012 file photo shows Republican presidential candidate, former Massachusetts Gov. Mitt Romney making a point during the third presidential debate with President Barack Obama at Lynn University in Boca Raton, Fla. Romney's shift toward the center on foreign policy issues including Iran and the war in Afghanistan are a clear effort to attract independent voters. But he risks upsetting some conservatives in his own party, and possibly reinforcing the idea that he lacks strong convictions. (AP Photo/David Goldman, File)

Associated Press
FILE - This Oct. 22, 2012 file photo shows Republican presidential candidate, former Massachusetts Gov. Mitt Romney making a point during the third presidential debate with President Barack Obama at Lynn University in Boca Raton, Fla. Romney's shift toward the center on foreign policy issues including Iran and the war in Afghanistan are a clear effort to attract independent voters. But he risks upsetting some conservatives in his own party, and possibly reinforcing the idea that he lacks strong convictions. (AP Photo/David Goldman, File)
FILE - This Oct. 22, 2012 file photo shows Republican presidential candidate, former Massachusetts Gov. Mitt Romney making a point during the third presidential debate with President Barack Obama at Lynn University in Boca Raton, Fla. Romney's shift toward the center on foreign policy issues including Iran and the war in Afghanistan are a clear effort to attract independent voters. But he risks upsetting some conservatives in his own party, and possibly reinforcing the idea that he lacks strong convictions. (AP Photo/David Goldman, File)
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