South Carolina primary
Former House Speaker Newt Gingrich stormed to an upset win in the South Carolina primary Saturday night, dealing a sharp setback to former front-runner Mitt Romney and suddenly scrambling the race for the Republican presidential nomination.
Texas Gov. Rick Perry will abandon his presidential bid and endorse Newt Gingrich, a move coming just two days before the pivotal South Carolina primary.
Gov. Chris Christie is urging political ally Mitt Romney to immediately release his tax returns rather than waiting until April.