On a late October day in Springfield nearly five years ago, then-Illinois House Speaker Michael Madigan exited a private caucus meeting and strode up to a group of waiting reporters in one of the state Capitol’s vast marble halls.It was lawmakers’ first day back in the Statehouse since wrapping up a historically productive spring legislative session in which Democrats — emboldened by major wins during the 2018 midterm election cycle — raised Illinois’ minimum wage, legalized recreational marijuana and enshrined abortion …