Soon after getting his job, Jurgis returns to Marija, imploring her to leave the brothel, but she refuses. She is addicted to morphine and cannot find work anywhere else. Jurgis reluctantly departs, returning home to a sick Elzbieta and her unruly sons, but this time, instead of leaving, Jurgis turns to socialism for support.
Members of the Socialist Party in Chicago are preparing for the election. On the night before the vote, a millionaire sympathetic to the socialist movement invites Jurgis to dinner. Here Jurgis encounters Lucas, an evangelist, and Nicholas Schliemann, a former philosophy professor, who debate the nature of socialism while answering questions for a skeptical magazine editor.
Jurgis attends a party gathering the next day to watch election returns. The Socialist Party makes substantial gains across the country, especially in Packingtown. One socialist leader interprets the results as a call for further organization by party members, for the voters may not really be socialists, but rather just disgruntled democrats. The Jungle closes with the orator inciting the crowd with chants of ?Chicago will be ours! CHICAGO WILL BE OURS!?