Donald TrumpDonald John TrumpSchiff urges GOP colleagues to share private concerns about Trump publicly US-China trade talks draw criticism for lack of women in pictures Overnight Defense: Trump to leave 200 troops in Syria | Trump, Kim plan one-on-one meeting | Pentagon asks DHS to justify moving funds for border wall MORE has slipped as several rival candidates have gained on the 2016 GOP front-runner, according to a new Quinnipiac University poll following the second Republican debate.

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Trump is supported by 25 percent of Republicans and those leaning Republican in the survey released Thursday, ticking down 3 points in the poll since last month.

Retired neurosurgeon Ben CarsonBenjamin (Ben) Solomon CarsonThe Hill's Morning Report - Can Bernie recapture 2016 magic? Democrats veer left as Trump cements hold on Republicans Trump HUD official: 'I don't care if I'm not supposed to be tweeting during the shutdown' MORE is supported by 17 percent, businesswoman Carly Fiorina gets 12 percent and former Florida Gov. Jeb Bush snags 10 percent in the poll.

That represents a 7-point increase for Fiorina, who has recently sparred with Trump, since last month, as well as a 5-point gain for Carson and 3-point gain for Bush in the poll.

Sen. Marco RubioMarco Antonio RubioInviting Kim Jong Un to Washington Venezuela closes border with Brazil The Hill's 12:30 Report: Trump escalates fight with NY Times MORE (Fla.) has also ticked upward 2 points to 9 percent, while Ohio Gov. John Kasich and New Jersey Gov. Chris Christie have ticked down slightly.

Trump has come out swinging in recent days at cable networks and several GOP rivals following his performance in last week's debate and an uptick in interest for other candidates.

By a four-to-one margin, GOP voters say that Fiorina outperformed Trump during last week's debate, according to the Quinnipiac poll, which found 29 percent say they would "definitely not support" Trump.

On the Democratic side, former Secretary of State Hillary Clinton continues to outpace rivals, taking 43 percent in the poll while Sen. Bernie Sanders (I-Vt.) gets 25 percent.

Vice President Biden, who is mulling entering the Democratic race, snags 18 percent, with 10 percent of Democrats undecided at this point.

The survey of 737 Republicans and 587 Democrats was conducted Sept. 17-21 via landlines and cellphones with a margin of error of 3.6 points for Republicans and 4 points for Democrats.

A new Bloomberg poll, meantime, also found Fiorina, Bush and Carson gaining on Trump following last week's debate.

Trump remained at 21 percent support in that poll, while Carson gained 11 points from last month to 16 percent. Fiorina added 10 points to 11 percent and Bush picked up 3 points to stand at 13 percent support.

Bloomberg's poll, conducted Sept. 18-21, has a margin of error of 5 points.

 

 

 

 

 

 This report was updated at 9:46 a.m.