Vice President Harris and former President Trump are virtually tied in the critical “blue wall” state of Wisconsin, according to a poll released Wednesday.

In the Marquette Law School survey of registered voters in Wisconsin — conducted July 24-Aug. 1, soon after President Biden ended his reelection bid and endorsed Harris — Trump leads Harris in a two-way race, 50 percent to 49 percent.

Among likely voters in Wisconsin, however, the numbers were reversed, with Harris taking the lead, 50 percent to 49 percent, in a two-way race.

Harris gets the biggest boost from a multicandidate race that includes Independent candidate Robert F. Kennedy Jr., Libertarian candidate Chase Oliver, Green Party candidate Jill Stein and others.

Among registered voters in Wisconsin, Harris led Trump by 2 points in the multicandidate race, 45 percent to 43 percent, reversing the 1-point lead Trump had in the two-way race. Kennedy got 8 percent, and Oliver and Stein each got 1 percent. No other candidate reached that threshold.

Among likely voters, Harris maintained her 1-point lead in a multicandidate race: Harris received 46 percent, Trump got 45 percent, Kennedy got 6 percent, Oliver got 1 percent, and Stein got 1 percent.

In a poll conducted before the Biden-Trump debate in June, Biden’s showing in a head-to-head match-up against Trump was 1 point stronger than Harris’s recent showing, among both registered voters and likely voters.

Among registered voters in Wisconsin, Biden and Trump each got 50 percent of support. Among likely voters in Wisconsin, Biden led Trump by 2 points, 51 percent to 49 percent.

Wisconsin is among the key swing states that both candidates see as critical to winning the election in November. The poll was conducted before Harris become the party’s official nominee and before she tapped Minnesota Gov. Tim Walz to be her running mate.

The survey included 877 registered voters, with a margin of error of 4.6 percentage points. It included 801 likely voters, with a margin of error of 4.8 percentage points.