Trump won't win Wisconsin. Outside of the WoW area, he's an absolute horrible fit for the state.
The GB area is heavily Catholic and adverse to anti-immigrant rhetoric.
The MKE area has heavy minority populations that will swing hard against him.
He's absolutely hated in Dane County.
The MN twin cities exurbs of the northeast are likely to reject him as well.
His best areas will be the WoW counties and, possibly, parts of the central northern areas of the state. Undecideds will break heavily against him, and Feingold is actually doing the work of energizing turnout because people want him back in the seat he shouldn't have lost.
What's your thought on final margin?