CBS News: “In the upper Midwest, we see this playing out in two key states the president flipped from Democrats in 2016: Biden leads in Michigan by six points, and the president has the slightest one-point edge in Ohio, where he won by a comfortable margin four years ago. Ohio is also a critical part of the president’s overall electoral map in 2020.”
“A majority of Biden’s support in both these states comes from people who are mainly voting against Mr. Trump rather than for him.”
CBS News/YouGov National poll
CBS News/YouGov Ohio poll
CBS News/YouGov Michigan poll