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One year out before the 2016 general election, Hillary Clinton and Ben Carson are tied in a hypothetical matchup, but Clinton leads three other major Republican candidates, according to brand-new numbers from the NBC News/Wall Street Journal poll.

Clinton is ahead of Republican Donald Trump by eight points among registered voters, 50 percent to 42 percent.

She leads former Florida Gov. Jeb Bush by four points, 47 percent to 43 percent.

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And Clinton holds a three-point advantage over Sen. Marco Rubio, 47 percent to 44 percent, though that's well within the poll's margin of error of plus-minus 3.4 percentage points.

But against Ben Carson, who is now leading the GOP horserace in the NBC/WSJ poll, Clinton finds herself in a tied contest, 47 percent to 47 percent.

The reason why Carson performs better versus Clinton than the rest of the GOP field is due to Carson’s standing among independent voters.

Carson leads Clinton by 13 points among independents (47 percent to 34 percent). That’s compared with Rubio’s seven-point lead here (42 percent to 35 percent), Bush’s four-point lead (41 percent-37 percent) and Trump’s four-point lead (43 percent to 39 percent).

The NBC/WSJ poll also tested Democratic presidential candidate Bernie Sanders against Trump and Rubio, and Sanders outperforms Clinton -- though by just a point or two.

Sanders leads Trump by nine points, 50 percent to 41 percent (versus Clinton’s eight-point advantage), and he's ahead of Rubio by five points, 46 percent to 41 percent (versus Clinton's three-point lead).

The live-caller NBC/WSJ poll was conducted Oct. 25-29 of 847 registered voters (reached by landline and cell phone), and it has a margin of error of plus-minus 3.4 percentage points.