The map is supposed to show that the Midwest or Rust Belt areas that preferred Sanders to Clinton were the same that preferred Trump to Clinton. Not Ohio for whatever reasons, but Michigan, Indiana, Wisconsin, even Illinois and Minnesota, rural Pennsylvania, the Democrats in these places preferred Sanders. Unless everything we know about the rural Midwest is wrong and all those small towns are actually teeming with 19 year old Bernie Bro college kids who are politically active as Democrats. Highly unlikely! That narrative should have been dropped long ago, in my opinion. The 538 article was unrelated, sorry. * I'm practicing saying God with five syllables. It doesn't sound right.