Republican presidential frontrunner Donald Trump is falling behind in Wisconsin, according to a new poll from Marquette Law School released on Wednesday.
Trump trailed Sen. Ted Cruz by 10 points in the survey. The real-estate magnate attracted 30 percent support among likely voters. Cruz's support was at 40 percent and Ohio Gov. John Kasich was at 21 percent.
It's a big difference from last month's Marquette poll. When that was released in mid-February, Trump led Cruz by 11 points.
PHOTOS: Ted Cruz on the campaign trail
While Trump support has remained steady at 30 percent, Cruz's shot up in the new survey, doubling from 19 percent to 40 percent in just more than one month.
The Wednesday survey came after the GOP field dwindled to three remaining candidates. The Marquette Law School poll is widely respected among political observers.
Wisconsin's primary, which will be held next week, is the only GOP contest on the calendar before the New York primary on April 19. It awards 42 delegates, and many in the "Never Trump" movement view it as a final stand to stop the GOP frontrunner.
Cruz and Trump are campaigning aggressively to win the state. Cruz is touting his recent endorsement from Wisconsin Gov. Scott Walker, a former presidential candidate. Trump has scheduled campaign events throughout the week in the Badger State.
Related: Scenes from an anti-Trump rally in Wisconsin:
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