Republican presidential frontrunner Donald Trump now leads his top two challengers — both outsiders — by 10 points, according to a new poll released Wednesday.

Twenty-three percent of the 1,000 adults surveyed last Thursday through Monday in the USA Today/Suffolk University poll said they would vote for the billionaire developer.

Both retired pediatric neurosurgeon Dr. Ben Carson and former Hewlett-Packard Co. CEO Carly Fiorina finished with 13 percent each.

Only 10 of the 15 candidates seeking the nomination were included in the survey. The poll has a margin of error of 3 percent.

Here’s how the remaining candidates fared:

  • Florida Sen. Marco Rubio: 9 percent.
  • Former Florida Gov. Jeb Bush: 8 percent.
  • Texas Sen. Ted Cruz: 6 percent.
  • Kentucky Sen. Rand Paul, Ohio Gov. John Kasich, and former Arkansas Gov. Mike Huckabee: 2 percent each.
  • South Carolina Sen. Lindsey Graham, Louisiana Gov. Bobby Jindal, and New Jersey Gov. Chris Christie: 1 percent each.

Source: Poll: Trump Up 10 Points Over Ben Carson, Carly Fiorina