Supporters look on as they watch results on a large screen as a major news network projected Ohio for President Barack Obama at the U.S. Republican presidential nominee Mitt Romney election night rally in Boston, Massachusetts November 6, 2012. [REUTERS/Mike Segar]
LIVE COVERAGE: The 2012 U.S. Presidential Election

Supporters look on as they watch results on a large screen as a major news network projected Ohio for President Barack Obama at the U.S. Republican presidential nominee Mitt Romney election night rally in Boston, Massachusetts November 6, 2012. [REUTERS/Mike Segar]

LIVE COVERAGE: The 2012 U.S. Presidential Election