Trump holds 21-point lead in new national poll
© Getty

GOP presidential front-runner Donald TrumpDonald John TrumpHouse Democrat slams Donald Trump Jr. for ‘serious case of amnesia’ after testimony Skier Lindsey Vonn: I don’t want to represent Trump at Olympics Poll: 4 in 10 Republicans think senior Trump advisers had improper dealings with Russia MORE holds a 21-point lead over primary rival Ted CruzRafael (Ted) Edward CruzDebbie Wasserman Schultz marks 10 years as breast cancer survivor Foreign agent registration is no magical shield against Russian propaganda Let Trump be Trump and he'll sail through 2020 MORE, a new national poll finds.

A new NBC News/SurveyMonkey online tracking poll released Tuesday found Trump leading the Texas senator, 48 percent to 27 percent. Ohio Gov. John Kasich, who gained 2 points since last week, follows with 18 percent.

When it comes to the possibility of a contested convention, the survey found that a majority of registered Republicans and those who lean Republican, 57 percent, believe that Trump should win the nomination if he wins a plurality of delegates, even if he fails to capture a majority of delegates.

The survey also shows 52 percent of those same voters are happy with a general election match-up between Trump and Democratic presidential front-runner Hillary ClintonHillary Diane Rodham ClintonGrassley blasts Democrats over unwillingness to probe Clinton GOP lawmakers cite new allegations of political bias in FBI Top intel Dem: Trump Jr. refused to answer questions about Trump Tower discussions with father MORE, while 30 percent would consider a third party candidate.

The poll was conducted online March 21–27 and surveyed 6,521 adults, including 5,741 who say they’re registered voters.