Laesch has said he wants to lower debt in the city; invest in green energy; and improve street lights, curbs and water lines.

Irvin has been the western suburb's mayor since 2017. During the runoff campaign, Laesch received strong support from key Illinois Democrats, including former Gov. Pat Quinn.

Laesch has 53.60% of the vote while Irvin has 46.40% of the vote, according to unofficial early voting results from DuPage, Kendall, Kane and Will counties. Votes from Election Day are still being counted at the time of reporting.