Trump hits new high among registered Republicans in NBC poll
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GOP presidential front-runner Donald TrumpDonald John TrumpCorsi sues Mueller for alleged leaks and illegal surveillance Comey: Trump 'certainly close' to being unindicted co-conspirator Trump pushes back on reports that Ayers was first pick for chief of staff MORE now has the support of 40 percent of registered Republicans, gaining 4 points in an NBC News/Survey Monkey national weekly tracking poll to reach a new high just before voters go to the polls on Super Tuesday.

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Marco RubioMarco Antonio RubioDems have new moniker for Trump: ‘Unindicted co-conspirator' John Kelly’s exit raises concerns about White House future Rubio: We don’t need direct evidence crown prince ‘ordered the code red’ on Khashoggi killing MORE added 5 points following his performance in the latest Republican debate, putting him at 21 percent in the online poll, released early Tuesday morning.

Ted CruzRafael (Ted) Edward CruzGOP tensions running high on criminal justice bill Strategist behind Warren's political rise to meet with O'Rourke: report Trump tells McConnell to let Senate vote on criminal justice reform MORE, who’s in third place, slipped 1 point, to 18 percent, his lowest level in the survey.

Ben Carson ranks fourth, with 8 percent, while John Kasich follows, with 7 percent.

Pollsters also found that the overwhelming majority of GOP voters believe Trump will win their party's nomination.

About 71 percent predict Trump will become the Republican standard-bearer, up 15 points from a similar survey last week.

Rubio ranks second on that question, at 12 percent, while Cruz takes 10 percent, Carson 2 percent and Kasich 1 percent.

NBC News/Survey Monkey polled 8,759 registered Republican voters between Feb. 22 and 28. Their survey has a 1.8 percentage point margin of error.

Updated at 7:14 a.m.