Trump holds narrow lead over Carson in new poll
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Donald TrumpDonald John TrumpStates slashed 4,400 environmental agency jobs in past decade: study Biden hammers Trump over video of world leaders mocking him Iran building hidden arsenal of short-range ballistic missiles in Iraq: report MORE is in first place in the latest NBC News/Wall Street Journal poll of the Republican presidential race, though his edge over Ben CarsonBenjamin (Ben) Solomon Carson'Housing First' approach won't solve homelessness crisis Clarence Thomas blasts his Biden-led confirmation hearings: 'The idea was to get rid of me' Affordable housing crisis demands urgent, sustained action MORE narrows 25 percent to 22 percent.

Sen. Marco Rubio (R-Fla.) comes in third, with 13 percent.

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Sen. Ted Cruz (R-Texas) follows with 9 percent, a doubling of his support in the poll, while former Florida Gov. Jeb Bush ticked upward to 8 percent. 

The results from Monday's poll underline how the GOP race has been dominated by two outsider candidates: businessman and television star Trump, and retired neurosurgeon Carson. 
 
Monday's poll represents a 4-point gain for Trump, a 2-point gain for Carson, a 2-point gain for Rubio, a 4-point gain for Cruz and 1-point gain for Bush since last month. 
 
Former businesswoman Carly Fiorina is at 7-percent support in the latest poll, down 4 points following a bump in her numbers from the second GOP debate last month.
 
The survey of 400 GOP primary voters was conducted Oct. 15 to Oct. 18 and has a margin of error of 4.9 points.