“We’re going to focus on those undecided voters,” Crowley said. A Marquette University Law School poll of Wisconsin Democratic primary voters conducted in late July, before former Lt. Gov. In Michigan, Democratic Gov. Sanders defeated Clinton in the Wisconsin primary by 13 points that year, before Clinton went on to lose the presidential race to Trump. Peggy Flanagan in the Democratic primary for U.S. Senate that’s playing out in the aftermath of Trump’s aggressive immigration enforcement surge in the state.