Obama congratulates Romney on "spirited campaign"
First lady Michelle Obama hugs U.S. President Barack Obama on last night of campaigning while in Des Moines, Iowa, November 5, 2012. REUTERS/Larry Downing
A combination photograph shows Republican presidential nominee Mitt Romney (L) smiling as he arrives at the airport in Bedford, Massachusetts and U.S. President Barack Obama thanking a campaign volunteer outside a field office in Chicago, Illinois respectively on election day, November 6, 2012. REUTERS/Brian Snyder (Romney), Jason Reed (Obama)
U.S. President Barack Obama greets supporters on his last night of campaigning in downtown Des Moines, Iowa, November 5, 2012. REUTERS/Larry Downing