Republican presidential front-runner Donald TrumpDonald John TrumpAssange meets U.S. congressman, vows to prove Russia did not leak him documents A history lesson on the Confederacy for President Trump GOP senator: Trump hasn't 'changed much' since campaign MORE holds a 7-point lead over rival Ted CruzTed CruzThe media couldn't be more blatant in distorting Trump's words on Charlottesville Curtis wins GOP primary for House seat vacated by Jason Chaffetz Kimmel: Let’s make Trump a king so he has no power MORE in Iowa, fueled by first-time GOP caucusgoers, according to a new poll.

Trump leads Cruz, 31 to 24 percent, in the Quinnipiac poll released Monday morning.

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Marco RubioMarco RubioScarborough: Trump has chosen the 'wrong side' THE MEMO: Trump reignites race firestorm RNC spokeswoman: GOP stands behind Trump's message 'of love and inclusiveness' MORE has 17 percent, while no other GOP candidate has double-digit support, with Ben Carson the closest, at 8 percent. 

Trump has edged past Cruz in the Hawkeye State over the past few weeks but on Monday shied away from predicting a win over his GOP rivals.
 
Trump's rise in the Quinnipiac poll is boosted by first-time Iowa voters: 40 percent say they will support him, compared with 22 percent for Cruz. 
 
Among first-time voters, Sanders holds a major lead over Clinton, 62 to 35 percent, while Clinton holds a 9-point lead among those who have caucused before.

Martin O’Malley has 3 percent support in the Hawkeye State.

Attention in the 2016 cycle has been largely dominated by political outsiders, and pollsters predict high turnout could boost Trump and Sanders, who have positioned themselves as such.
 
The survey of 890 likely GOP caucusgoers and 919 likely Democratic caucusgoers was conducted Jan. 25–31 via landlines and cellphones with a margin of error of 3.3 points for Republicans and 3.2 points for Democrats.