Poll: Trump up by 15 points in Indiana
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Republican presidential front-runner Donald TrumpDonald TrumpWhite House denies pausing military aid package to Ukraine Poll: 30 percent of GOP voters believe Trump will 'likely' be reinstated this year Black Secret Service agent told Trump it was offensive to hold rally in Tulsa on Juneteenth: report MORE has a 15-point lead over his closest rival, Texas Sen. Ted CruzRafael (Ted) Edward CruzWhite House denies pausing military aid package to Ukraine Ted Cruz says critical race theory is as racist as 'Klansmen in white sheets' Pentagon pulling 'certain forces and capabilities,' including air defenses, from Middle East MORE, just days ahead of the Indiana primary.

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Trump has the support of 49 percent of likely Republican primary voters, compared to Cruz’s 34 percent, in an NBC News/Wall Street Journal/Marist poll released Sunday morning.

Ohio Gov. John Kasich has 13 percent.

Trump leads Cruz by just 4 points in the Hoosier State, however, according to the latest RealClearPolitics average of polls.

Among Democrats, Hillary ClintonHillary Diane Rodham ClintonWhite House denies pausing military aid package to Ukraine Monica Lewinsky responds to viral HBO intern's mistake: 'It gets better' Virginia governor's race poses crucial test for GOP MORE leads Vermont Sen. Bernie SandersBernie SandersThe Hill's Morning Report - ObamaCare here to stay Centrists gain leverage over progressives in Senate infrastructure battle OVERNIGHT ENERGY:  EPA announces new clean air advisors after firing Trump appointees |  Senate confirms Biden pick for No. 2 role at Interior | Watchdog: Bureau of Land Management saw messaging failures, understaffing during pandemic MORE by 4 points in the new poll, 50 to 46 percent.

The NBC/WSJ/Marist poll, conducted April 26–28, has a margin of error of 3.9 percentage points for Republicans and 4.6 points for Democrats.