The Latest: Fiorinia Tweets that she's quitting GOP race

COLUMBIA, S.C. (AP) — Here's the latest on the 2016 presidential race as Republican and Democratic candidates head from New Hampshire to South Carolina and beyond.

The 61-year-old drew positive reviews for several strong debate performances, in which she promoted her business expertise and argued that as the lone woman in the GOP field she was best positioned to oppose likely Democratic nominee Hillary Clinton.

Fiorina struggled with criticism of her time at Hewlett-Packard, where she was ousted from the top job in 2005, after leading a major merger and laying off 30,000 people.

Hillary Clinton's campaign is questioning rival Bernie Sanders record on issues affecting minorities, as the race moves to the more diverse states of South Carolina and Nevada.

Just a day after a devastating defeat in New Hampshire, campaign supporters are attacking Sanders record on gun control, criminal justice and civil rights.

Clinton holds a sizable lead in the overall race for delegates because of strong support from superdelegates, the party officials who can back the candidate of their choice.

Marco Rubio's campaign manager says the Florida senator's New Hampshire setback could extend the Republican nomination fight for at least another three months, if not longer.

[...] Republican National Committee officials have already had preliminary discussions about just such a scenario given the possibility no candidate secures a majority of delegates in the state-by-state contests to come.

Kasich has pledged to run a positive campaign, but he's been known at times to be short-tempered in his home state of Ohio.

Jeb Bush says New Hampshire voters "pushed the pause button" on anointing any candidate as the favorite to win the Republican nomination.

Bush told reporters Wednesday after a campaign rally in Bluffton, South Carolina, that the New Hampshire primary had cancelled "the coronation after a third-place finish" — an apparent reference to GOP rival Marco Rubio, who slipped from third in the Iowa caucus to finishing fifth in New Hampshire.

Christie had banked his presidential prospects on a strong finish in the early-voting state, but finished behind most of his Republican rivals in Tuesday's election.

Christie had trouble from the get-go raising money and building support in a crowded Republican field dominated by another brash East Coaster: businessman Donald Trump.

Marco Rubio says his campaign is moving into a more aggressive phase after a disappointing finish in New Hampshire.

The Texas senator, who came in first in Iowa and third in New Hampshire, said he's the only candidate in the crowded GOP nomination fight who will stand against abortion and defend gun rights.

Cruz revived his criticism of Trump as a defender of President Barack Obama's health care law.

Obama has not publicly endorsed a candidate in the race, although recent remarks suggest he favors Clinton, his former secretary of state.

The billionaire Home Depot co-founder says, "'yesterday was a great day for America, a fabulous day for America," though "it wasn't a great day" for conventional political candidates, including Christie.

Langone says he thought Christie would "do better," but that primary winner Donald Trump is a proxy for the frustrations people are feeling.

The Rev. Al Sharpton and Democratic presidential candidate Bernie Sanders dined together Wednesday at a Harlem landmark, where they discussed issues that affect the African-American community around the country.

Sharpton says, "I think it is very important that he sent the signal that on the morning after a historic victory...he would come to Harlem and have breakfast with me."

Sharpton says the two men talked at Sylvia's Restaurant about affirmative action, police brutality and the water disaster in Flint.

Florida Sen. Marco Rubio says his underwhelming debate performance and low finish in the New Hampshire primary won't stop him from winning the Republican presidential nomination.

Donald Trump says he talked with Chris Christie a "little bit" about the New Jersey governor dropping out of the race for the GOP presidential nomination.

Brielle Applebaum of the Conservative Leadership Project says a Wednesday forum on legal and constitutional issues set for Charleston has been cancelled.