President Barack Obama has defeated his Republican challenger Mitt Romney to win a second and final term in office.
Obama Wins a Second Term in Office
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US President Barack Obama celebrates after delivering his acceptance speech in Chicago on November 7, 2012.
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President Barack Obama speaks at his election night party November 7, 2012, in Chicago, Illinois.
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President Barack Obama walks on stage with first lady Michelle Obama and daughters Malia and Sasha at his election night party November 7, 2012, in Chicago, Illinois.
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President Barack Obama waves as he walks on stage with first lady Michelle Obama and daughters Malia and Sasha at his election night party November 7, 2012, in Chicago, Illinois.