The retired neurosurgeon has surpassed the real estate mogul nationwide by 4 percentage points.
The new survey shows that voters are attracted to Carson's personal story.
The retired neurosurgeon leads the real estate mogul by 8 percentage points in the early primary state.
Late on Tuesday, Ryan said he would pursue the top House job if his fellow Republicans united behind him.
Fiorina had polled poorly in July and early August, but she gained support after the first Republican debate on August 6.
Public disapproval of Congress is disproportionately problematic for the majority party.
He’s the top choice to be speaker of the House, but he says he doesn’t want the job.
John Boehner leaves in a few weeks, and the California congressman is almost sure to succeed him.
The debate, which is the third GOP event of this election cycle, will be held on October 28.
The real estate billionaire leads the retired neurosurgeon by one percentage point.
Republican wannabes are making non-stop attacks on the millennial generation’s heroes and beliefs.
The Republican's decision comes as the possibility of a government shutdown looms.
Despite an impressive showing at the last Republican debate, Carly Fiorina trails Ben Carson.
Republicans are offering a choice between sanctuary cities and thousand mile anti-rapist walls.
The unabashed neo-con militarist views of Cheney are being heartily commended.
The GOP wannabes are in favor of funding transparency, but their Congress members aren’t.
National support for Republican candidate Carson has reached 23 percent, just 4 percentage points behind Trump.
Donald Trump on Saturday was tricked into thanking the leader of Britain's Labour Party.
The CNN Republican presidential debate will take place in southern California on Wednesday.
The billionaire’s promise is a big win for RNC Chair Reince Priebus.
"We need to be unified. We need to win," Bush said.