"Progressive Brandon Johnson wins Chicago mayoral election"

Brandon Johnson, a progressive Cook County commissioner backed by the Chicago Teachers Union, has won the Chicago mayoral election, defeating Paul Vallas, a moderate former city schools superintendent who campaigned on a pro-police message. Johnson will succeed Lori Lightfoot, who failed to advance to the top-two runoff. The election was marked by a clash between the Chicago Fraternal Order of Police, which endorsed Vallas, and the Chicago Teachers Union, which backed Johnson. Johnson's victory is seen as a win for the progressive movement in Chicago politics.