You can't dismiss every poll because of what happened in Michigan. The Cook County suburbs are much wealthier than the Detroit suburbs and they aren't going to vote for someone who wants to raise taxes through the roof. It's an entirely different ballgame in Illinois.
Kind of irrelevant, as they'll be voting in the GOP primaries.
The rich liberal Protestants, Catholics, and Evangelicals will be voting in the GOP primaries, but the rich Jews and atheists/agnostics will for the most part vote in the Dem primary. I remember in Mr. Illini's map series how there were very wealthy parts of suburban Chicago that voted for Pat Quinn, and usually it was tightly correlated with Jewish population. I think it'll hurt Sanders a little bit, but not as much as Invisible Obama is suggesting.
