Mitt Romney, Republican presidential candidate, waves as he arrives... News Photo2012 United States Presidential Election,Arrival,Boston - Massachusetts,Democracy,Election,Exhibition,Government,Horizontal,Massachusetts,Mitt Romney,Morning,North,North America,Political Rally,Politics,President,Presidential Candidate,Presidential Election,Republican Party,Speech,The Americas,The Media,USA,United States Presidential Election,Voting,WavingPhotographer Collection: Bloomberg 2012 BloombergMitt Romney, Republican presidential candidate, waves as he arrives to make a speech during his election rally at the Boston Convention and Exhibition Center in Boston, Massachusetts, U.S., in the early morning on Wednesday, Nov. 7, 2012. U.S. President Barack Obama, the post-partisan candidate of hope who became the first black U.S. president, won re-election today by overcoming four years of economic discontent with a mix of political populism and electoral math. Photographer: Rick Wilking/Pool via Bloomberg