Herman Cain is enjoying a surge in popularity in New Hampshire. But will his 9-9-9 tax plan withstand the scrutiny that top-tier candidates must face?
He's the first African-American to head presidential ticket of a major party, winning Democrats' long war of attrition.
She wins three of four March 4 primaries, reviving her campaign and setting the stage for a long duel for the Democratic nomination.
Results in the Granite State mean frontrunners in both parties will continue to duke it out for the nomination.
Polls released Sunday show Romney in dead heats in both Iowa and New Hampshire.