WISCONSIN
41% definitely/probably for the Dem (31% def, 10% prob)
28% definitely/probably for Trump (22% def, 6% prob)
21% undecided
PENNSYLVANIA
40% definitely/probably for the Dem (33% def, 7% prob)
29% definitely/probably for Trump (23% def, 6% prob)
22% undecided
MINNESOTA
41% definitely/probably for the Dem (32% def, 9% prob)
30% definitely/probably for Trump (24% def, 6% prob)
21% undecided
MICHIGAN
39% definitely/probably for the Dem (33% def, 6% prob)
27% definitely/probably for Trump (21% def, 6% prob)
25% undecided
https://www.kff.org/other/report/blue-wall-voices-project/