There are a lot of ways people describe Toni Preckwinkle. Progressive pioneer. Party boss. Prickly county board president. But the image of her in the race to become Chicago’s next mayor doesn’t tell the entire story of her long career. WBEZ’s Becky Vevea digs into Preckwinkle’s life and just a few of the moments that tell voters something more about the kind of mayor Preckwinkle might be. An update has been made to this podcast.

Each week at On Background, WBEZ’s team of political reporters brings you the backstory on the week’s big story. Host Becky Vevea and guests take you inside the back rooms of Chicago and Illinois government to better understand the people, places and forces shaping today’s politics.