Mike Scully is a powerful, conscienceless Democratic Party boss who has a hand in many of Chicago's criminal activities, including the housing scam that defrauds the Rudkus family. During Jurgis's time as a criminal, he helps Scully rig an election and enjoys the benefits of Scully's political "pull." However, Jurgis falls out of favor when he attacks Phil Connor a second time, as Connor is a close friend of Scully's.