U.S. voters went to the polls Nov. 6 to elect a president. In the weeks and months before, and even on Election Day, both candidates worked to influence the undecided and keep voters engaged in the process.
President Barack Obama calls to thank volunteers in Wisconsin, at campaign office call center in Chicago the morning of the 2012 election, Tuesday, Nov. 6, 2012.
Republican presidential candidate, former Massachusetts Gov. Mitt Romney greets campaign workers during a visit to a voter call center in Green Tree, Pennsylvania, Tuesday, Nov. 6, 2012.
President Barack Obama smiles for cameras as he shakes hands with supporters after speaking at a campaign event at Nationwide Arena in Columbus, Ohio, Nov. 5, 2012.
Republican presidential candidate, former Massachusetts Gov. Mitt Romney gives two thumbs up as he boards his campaign plane to head to Virginia after a Florida campaign rally in Sanford, Nov. 5, 2012.