WI may be a state where rural whites are more Democratic than suburban whites.
It's not the only one.
Now I'm wondering what other states we can think of where rural whites are more Dem than suburban whites. The only slam-dunk cases that come to mind are New Hampshire (obviously) and probably Massachusetts, on the strength of Western MA (and the fact that most of the rest of the state really can't be called rural).
I'd be willing to say New England as a whole, though I could be wrong about Maine. Maybe parts of the Southwest, for certain definitions of 'rural'?
Rural Maine is less democratic than Portland, and similarly Burlington is even stronger Dem than the rest of Vermont. I could definitely see CT and RI as possibilities, though I don't know enough about what rural areas even exist in RI, or if eastern CT is Dem enough to make up for Litchfield.
I'm pretty sure that none of the Southwest states would actually qualify here: while there are pockets of liberal white rural voters around all the ski resorts, I'd have to assume they'd be outnumbered by conservatives in each state.
Hawaii might be a possibility too, come to think of it.