Democratic nominee Joe Biden is leading Republican Donald Trump by 4 points in the key battleground state of Wisconsin, according to a new poll released Wednesday by Marquette University Law School. The survey shows Biden with 47% support and 43% support for Trump.

Biden’s lead is within the survey’s 4.3-point margin of error. The poll of 802 registered Wisconsin voters was conducted Aug. 30-Sept. 3. 

Wisconsin is a key swing state in the November election and carries 10 electoral votes. In 2016, Trump defeated Hillary Clinton by a 0.77% margin in the state, with 47.2% of the vote to Clinton’s 46.4%. Democratic nominees had previously won Wisconsin in every presidential election since 1988.

Trump has touted a “law-and-order” message in the state, visiting the city of Kenosha on Sept. 1 following the police shooting of Jacob Blake, a 29-year-old Black man. During Trump’s visit, he met with law enforcement and surveyed parts of the city that had been damaged by civil unrest. 

On Sept. 3, Biden also visited Kenosha, where he met with members of Blake’s family and focused on racial justice issues. Biden held a community meeting at a church in the city, where he listened to local activists and discussed police brutality.

California Sen. Kamala Harris, Biden’s vice presidential running mate, visited Wisconsin on Monday, taking a tour of an International Brotherhood of Electrical Workers training center in Milwaukee. Vice President Mike Pence also visited the state on Labor Day, meeting a group of employees at a regional utility company.