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South Carolina primary: Exit polls suggest Gingrich win South Carolina poll: Early results suggest Gingrich win
(40 minutes later)
Exit polls predict a big win for Newt Gingrich over Mitt Romney in South Carolina's primary, the latest leg of the battle for the Republican candidacy in the US presidential election. Partial results suggest Newt Gingrich has convincingly beaten Mitt Romney in South Carolina's primary, the latest leg of the battle for the Republican candidacy in the US presidential poll.
Mr Romney told supporters the race was now "getting even more interesting". With 70% of the vote counted, Mr Gingrich had 40% to Mr Romney's 26%.
Mr Romney was widely seen as the frontrunner, but the latest outcome is set to turn the race into a long, hard-fought campaign, correspondents say.
The South Carolina victor has won the nomination in each election since 1980.The South Carolina victor has won the nomination in each election since 1980.
Correspondents say the latest outcome is almost certain to turn the race for the presidential candidacy into a long, hard-fought contest. Other Republican hopefuls, former Pennsylvania senator Rick Santorum and Texas representative Ron Paul are trailing badly, with 18% and 13% respectively.
US networks called the vote in the former House speaker's favour shortly after polls closed, as exit polls predicted a margin of victory for Mr Gingrich of around 10%. Knockout punch plea
Other Republican hopefuls, former Pennsylvania senator Rick Santorum and Texas representative Ron Paul trailed badly. US networks called the vote in the former House speaker's favour shortly after polls closed at 19:00 local time on Saturday (00:00 GMT Sunday), as exit polls predicted a wide margin of victory for Mr Gingrich.
BBC North America editor Mark Mardell, in South Carolina, says that if confirmed, a Gingrich win is important, because all along the story of this race has been the search by Conservatives for an alternative to Mitt Romney.
It looks like victory for Newt, and a big one. If it is true, it is important.It looks like victory for Newt, and a big one. If it is true, it is important.
All along the story of this race has been the search by Conservatives for an alternative to Mitt Romney.All along the story of this race has been the search by Conservatives for an alternative to Mitt Romney.
It's just possible they have settled on Gingrich.It's just possible they have settled on Gingrich.
At the very least such a result would puncture the sense that eventually Romney will triumph. It slows his momentum.At the very least such a result would puncture the sense that eventually Romney will triumph. It slows his momentum.
And I suspect that it will mean the race will get very nasty indeed.And I suspect that it will mean the race will get very nasty indeed.
One thing I wouldn't take too seriously.One thing I wouldn't take too seriously.
Ever since 1980, the Republican winner of the South Carolina race has gone on to win the party's nomination.Ever since 1980, the Republican winner of the South Carolina race has gone on to win the party's nomination.
It is an interesting historical fact but it is certainly not an iron law.It is an interesting historical fact but it is certainly not an iron law.
BBC North America editor Mark Mardell, in South Carolina, says that if confirmed, a Gingrich win is important, because all along the story of this race has been the search by Conservatives for an alternative to Mitt Romney.
It is just possible they have settled on Mr Gingrich, and at the very least such a result will puncture the sense that eventually Mr Romney will triumph, our correspondent adds.It is just possible they have settled on Mr Gingrich, and at the very least such a result will puncture the sense that eventually Mr Romney will triumph, our correspondent adds.
Shortly after the vote, Mr Gingrich wrote on Twitter: "Thank you South Carolina! Help me deliver the knockout punch in Florida," referring to the next nominating contest on 31 January.Shortly after the vote, Mr Gingrich wrote on Twitter: "Thank you South Carolina! Help me deliver the knockout punch in Florida," referring to the next nominating contest on 31 January.
The contest for that state is now seen as crucial, being a major battleground state in the US general election, with a diverse electorate and where a lot of money will be spent campaigning.The contest for that state is now seen as crucial, being a major battleground state in the US general election, with a diverse electorate and where a lot of money will be spent campaigning.
Mr Romney told his supporters they were "three contests into a long primary season" and vowed to fight for every vote in every state.Mr Romney told his supporters they were "three contests into a long primary season" and vowed to fight for every vote in every state.
Polling stations across South Carolina closed at 1900 local time on Saturday (00:00 GMT Sunday) and official results are expected within hours. Meanwhile, Mr Santorum pledged to fight on, saying "it's a wide open race".
Mr Gingrich has captured the headlines in recent days, batting off a potentially damaging interview from an ex-wife, in which she said he had wanted an "open marriage".Mr Gingrich has captured the headlines in recent days, batting off a potentially damaging interview from an ex-wife, in which she said he had wanted an "open marriage".
Assuming Mr Gingrich's victory is confirmed, it means that three different candidates have won the first three nominating state-by-state contests: Mr Santorum narrowly beat Mr Romney in the Iowa caucus, while Mr Romney claimed the New Hampshire primary.Assuming Mr Gingrich's victory is confirmed, it means that three different candidates have won the first three nominating state-by-state contests: Mr Santorum narrowly beat Mr Romney in the Iowa caucus, while Mr Romney claimed the New Hampshire primary.
All contenders agree that this will now be an endurance race, rather than the quick sprint which Team Romney had hoped for, the BBC's Steve Kingstone says.
Mr Romney must now adapt his strategy, and come up with a more decisive riposte to those who criticise his personal wealth and career record as a venture capitalist, our correspondent says.
Expect a brutal media war in Florida, he adds.
Mr Romney set the tone in his post-defeat address, accusing Newt Gingrich of aligning himself with President Obama in a "frontal assault on free enterprise". For his part, Gingrich will counter that the "Massachusetts moderate" is the real Obama clone.
Primaries and caucuses will be held in every US state over the next few months to pick a Republican nominee before the eventual winner is anointed at the party convention in August to take on Democratic President Barack Obama in November.Primaries and caucuses will be held in every US state over the next few months to pick a Republican nominee before the eventual winner is anointed at the party convention in August to take on Democratic President Barack Obama in November.