Romney: Election over, principles endure

BOSTON, MA - NOVEMBER 07: Republican presidential candidate, Mitt Romney, speaks at the podium as he concedes the presidency during Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center on November 7, 2012 in Boston, Massachusetts. After voters went to the polls in the heavily contested presidential race, networks projected incumbent U.S. President Barack Obama has won re-election against Republican candidate, former Massachusetts Gov. Mitt Romney. (Photo by Alex Wong/Getty Images)
BOSTON, MA - NOVEMBER 07: Republican presidential candidate, Mitt Romney, speaks at the podium as he concedes the presidency during Mitt Romney's campaign election night event at the Boston Convention & Exhibition Center on November 7, 2012 in Boston, Massachusetts. After voters went to the polls in the heavily contested presidential race, networks projected incumbent U.S. President Barack Obama has won re-election against Republican candidate, former Massachusetts Gov. Mitt Romney. (Photo by Alex Wong/Getty Images)

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    Romney: Election over, principles endure

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