President Trump’s strength in a state that helped him narrowly win the White House in 2016 is showing signs of erosion, based on Joe Biden’s Democratic primary performance.

The former vice president on Tuesday won the Michigan Democratic primary 53-36% over Vermont Sen. Bernie Sanders. Biden came in far ahead in most demographics, including white men, a crucial voting group in the state, among others. That’s a big difference from Sanders’s Michigan primary win in 2016 over eventual nominee Hillary Clinton.