Donald Trump is gaining ground on Hillary Clinton among likely voters in the battleground state of Wisconsin, according to the latest Marquette University Law School poll released Wednesday.

While 45 percent of respondents said they would vote for the presumptive Democratic nominee when matched head-to-head against Trump, 41 percent said they will support the presumptive Republican nominee, and 9 percent said they would support neither candidate. Clinton led by nine points against Trump in last month’s survey, 46 percent to 37 percent, with 13 percent who said they would support neither candidate.

“There’s good evidence here” that the race is tightening in the Midwestern state,” poll director Charles Franklin said during the poll’s announcement Wednesday afternoon.