It looks like Cruz crushed Trump much WORSE than the polls showed. I’ve noticed this effect in many previous contests where polls showed Cruz tied with Trump or ahead. Cruz always seems to beat the polls in those situations. On the other hand, Trump beat the polls by just as big of an amount in Arizona.
As I wrote yesterday, Wisconsin is only 6% black. That explains why Sanders won and Trump lost. That, and midwesterners don’t seem to like Trump very much. I look forward to Trump crushing Cruz in New York.