Days before the Wisconsin Supreme Court election a major union representing transit workers wrote an $18,000 check to Milwaukee County Circuit Judge Janet Protasiewicz’s campaign. For the Amalgamated Transit Union, which represents bus drivers and mechanics, it was a huge donation compared with their previous donation to a Wisconsin Supreme Court candidate in 2018 for just $250. “There's a lot on the line with the Supreme Court race here,” said Donnell Shorter, head of the ATU Local 998 in Milwaukee. But that $18,000 is a drop in the bucket compared with the contributions of a few dozen ultra-wealthy donors. Recent...