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A new Fox News poll shows Trump on top

It also shows support for Bush eroding

(CNN) —

A trio of Republican establishment favorites – Jeb Bush, Scott Walker and Marco Rubio – are all losing ground in the party’s 2016 presidential field, a new Fox News poll shows.

Donald Trump, meanwhile, continues to dominate the race, earning 25% support nationally, while another outsider, retired neurosurgeon Ben Carson, is running second at 12%. Sen. Ted Cruz of Texas, known for locking horns with Republican congressional leaders, is third at 10%.

PHOTO: Andrew Harnik/AP

The race to become the next Republican presidential nominee continues as the highest polling candidates debate in Cleveland, Ohio, on Thursday, August 6. From left, Chris Christie, Marco Rubio, Ben Carson, Scott Walker, Donald Trump, Jeb Bush, Mike Huckabee, Ted Cruz, Rand Paul and John Kasich.

Bush, the former Florida governor, has dropped to 9% – fourth place, down from 15% and second place in a Fox News poll conducted earlier this month, before the first GOP presidential debate.

Walker, the Wisconsin governor, meanwhile, is tied for fifth, at 6% – down from 9% earlier this month. And Rubio, the senator from Florida, is now at 4% – in ninth place, and down from 5%.

The results, with outsiders at the front of the field and establishment favorites struggling to gain traction, reflect a shift among likely Republican primary voters toward candidates who challenge the political hierarchy.

PHOTO: John Minchillo/AP

The race to become the next Republican presidential nominee kicked off with the seven lowest-polling candidates taking the stage in Cleveland, Ohio, on Thursday, August 6. From left: Jim Gilmore, Lindsey Graham, Bobby Jindal, Rick Perry, Rick Santorum, Carly Fiorina and George Pataki.

In the new Fox News poll, former Arkansas Gov. Mike Huckabee tied with Walker for fifth at 6%. They’re followed by former Hewlett Packard CEO Carly Fiorina at 5%, Ohio Gov. John Kasich at 4%, Rubio, and then New Jersey Gov. Chris Christie and Sen. Rand Paul of Kentucky, who are both at 3% support.

The poll was conducted Aug. 11-13. It has a margin of error of plus or minus 3 percentage points.

CORRECTION: This story has been updated to reflect that the poll’s margin of error is 3 percentage points

Poll: GOP establishment candidates falling

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