WASHINGTON, April 13 (Xinhua) -- Former U.S. Vice President Joe Biden has won Wisconsin's Democratic primary of the 2020 presidential race, U.S. media projected on Monday.

With 89 percent of precincts reporting, Biden, the presumptive Democratic presidential nominee, has garnered roughly 64 percent of the vote, followed by Senator Bernie Sanders of Vermont, with 31 percent, according to The Associated Press.

Sanders, who endorsed Biden for the White House on Monday, dropped out of the Democratic race last week, after Wisconsin held its primary amid widespread public health concern over the COVID-19 outbreak.

The state's Democratic governor had tried to delay in-person voting, but was denied by the Wisconsin Supreme Court. Although in-person voting concluded last week, a separate court ruling restricted county clerks from releasing results until Monday.

Sitting President Donald Trump, the presumptive Republican presidential nominee, narrowly won Wisconsin, a general election battleground, in 2016.