News Chicago will elect first black female mayor; Lightfoot and Preckwinkle advance to runoff February 26, 2019Aamer Madhani, USA TODAYComments Off on Chicago will elect first black female mayor; Lightfoot and Preckwinkle advance to runoff Voters are casting their ballots for mayor in one of the most competitive races in Chicago’s 181-year history. But don't expect a winner on Tuesday.