Poll: Ben Carson leads Donald Trump by double digits in Iowa

New GOP poll shows stronger Carson lead
New GOP poll shows stronger Carson lead

    JUST WATCHED

    New GOP poll shows stronger Carson lead

MUST WATCH

New GOP poll shows stronger Carson lead 01:12

Story highlights

  • The poll confirms a shift in the race identified by two other polls in the past week
  • The poll had good news for other GOP candidates, as well

Washington (CNN)A new poll out Monday confirms that Ben Carson is topping Donald Trump in Iowa's Republican caucuses -- this time by 14 points.

According to the Monmouth University poll released Monday, Carson is leading Trump 32% to 18% among likely Republican Iowa voters. In a Monmouth poll conducted in August, the two had been tied at 23%.
    The poll confirms a shift in the state identified by two other polls in the past week. In the Des Moines Register/Bloomberg poll, Trump was up 9 points, and Quinnipiac University showed him up 8 percentage points.
    Trump has begun to attack Carson on the trail as the retired neurosurgeon rises in the polls and challenges Trump's front-runner status, though the mogul continues to lead nationally. Trump maintains that he only "counterpunches," but Carson has not been making Trump a focal point of his campaigning in recent weeks.
    The poll had good news for other GOP candidates, as well. Florida Sen. Marco Rubio has picked up 6 percentage points since August, to 10%. That's good enough to tie for third place with Texas Sen. Ted Cruz. Jeb Bush has picked up three points to be in fifth place, at 8%. His favorability rates have also improved 8 points since August.
    On the other hand, Carly Fiorina's post-debate bounce has seemingly ebbed, as she dropped from 10% in August to 5% in Monday's poll.
    Monmouth surveyed 400 likely Republican Iowa caucus-goers from October 22-25 for the poll. which has a margin of error of plus or minus 4.9 percentage points.