He was reelected mayor in 1919, beating out Robert Sweitzer once again along with Adolph S. Carm, John Collins, John Fitzpatrick, and Maclay Hoyne. Thompson was said to have had control of the 75,000 black voters in his day. In his campaign he claimed to be an advocate for the people against public utility companies and the rich who avoided taxes. This inspired Thompson to enforce a five-cent streetcar fare to promote his campaign, which was also used to threaten the action of streetcar companies. Eventually, however, despite his protests, the fare was raised to seven cents.