In the Chicago mayoral election of 1889, Democrat DeWitt Clinton Cregier defeated incumbent Republican John A. Roche, winning a majority of the vote and a margin of victory in excess of ten percent.
^Kantowicz, Edward. “The Emergence of the Polish-Democratic Vote in Chicago.” Polish American Studies, vol. 29, no. 1/2, 1972, pp. 67–80. JSTOR, JSTOR, www.jstor.org/stable/20147849.