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U.S. Republican presidential nominee Mitt Romney (L) and U.S. President Barack Obama answer a question at the same time during the second U.S. presidential campaign debate in Hempstead, New York, October 16, 2012 (Credit: Reuters/Jim Young)

U.S. Republican presidential nominee Mitt Romney (L) and U.S. President Barack Obama answer a question at the same time during the second U.S. presidential campaign debate in Hempstead, New York, October 16, 2012 (Credit: Reuters/Jim Young)