Ohio Gov. John Kasich holds a slight edge over GOP presidential front-runner Donald TrumpDonald TrumpStein: Al Gore needs to 'step up' on climate change Report: Bob Dole organized Trump's Taiwan call Conway may lead new pro-Trump group: report MORE in Kasich’s home state ahead of voting on Tuesday, according to a new poll.
Kasich did not fare as well in another poll released Sunday morning, which showed the Ohio governor and Trump in a tie with 33 percent support apiece.
Trump holds a nearly 2-to-1 lead in Florida, with 43 percent support in the NBC/Wall Street Journal/Marist survey. Rubio is in second place in his home state with 22 percent. Cruz then has 21 percent, and Kasich has 9 percent.
Trump tops Cruz in Illinois by 9 points, pollsters found, with 34 percent support. Cruz has 25 percent, Kasich has 21 percent and Rubio has 16 percent.
The NBC News/Wall Street Journal/Marist poll of likely Republican voters has a 4.1 percent margin of error in Ohio, a 4.3 percent margin of error in Florida and a 4.8 percent margin of error in Illinois.
Kasich leads Trump by 2 points in Ohio, according to a RealClearPolitics average of polls, while Trump tops his closest challenger by 18 points in Florida and 9 points in Illinois.
--This report was updated at 12:43 p.m.