Obama thanks supporters; Romney concedes

As President Obama wins a second term, his supporters get the party started, while Mitt Romney concedes defeat.

Kelly Rodgers, 18, of Philadelphia, holds a sign saying "We Will Barack You" as people celebrate outside of the White House after President Barack Obama won re-election against Mitt Romney in the presidential election on Pennsylvania Avenue in Washington, Wednesday, Nov. 7, 2012. (AP Photo/Jacquelyn Martin)

Kelly Rodgers, 18, of Philadelphia, holds a sign saying "We Will Barack You" as people celebrate outside of the White House after President Barack Obama won re-election against Mitt Romney in the presidential election on Pennsylvania Avenue in Washington, Wednesday, Nov. 7, 2012. (AP Photo/Jacquelyn Martin)

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