A new NBC News/Wall Street Journal poll finds Donald Trump is leading the GOP presidential field nationally with 30%, followed closely by Ted Cruz at 27%, John Kasich at 22% and Marco Rubio at 20%.
Also interesting is that Trump trails his rivals in hypothetical one-on-one match-ups: Cruz and Kasich best Trump by an identical 17 points, 57% to 40%, while Rubio beats Trump by 13 points, 56% to 43%.
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