Trump hits new high among registered Republicans in NBC poll
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GOP presidential front-runner Donald TrumpDonald John TrumpHouse expected to vote on omnibus Thursday afternoon House passes 'right to try' drug bill Spending bill rejects Trump’s proposed EPA cut 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.

Marco RubioMarco Antonio RubioRussia leak raises questions about staff undermining Trump House members urge Senate to confirm Trump's NASA nominee Rubio: McCabe 'should've been allowed to finish through the weekend' 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 CruzTrump can save Republicans and restore sanity to California in 2018 Cruz says Cambridge Analytica assured him its practices were legal Dem battling Cruz in Texas: ‘I can understand how people think this is crazy’ 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.