Chicago 2027 mayoral race

In late July, the filing period for the 2027 Chicago mayoral election opened, allowing candidates to collect the required signatures. Incumbent Mayor Brandon Johnson had not yet announced a bid, while former mayoral candidate Susana Mendoza began a petition drive and other hopefuls, including former U.S. Rep. Mike Quigley, started gathering support.

By early August, Illinois Secretary of State Alexi Giannoulias formally entered the race, unveiling a campaign funded with more than $22 million. A University of Chicago poll placed Giannoulias in the lead with 52 % support, ahead of Susana Mendoza at 47 %, while Johnson lagged far behind. Giannoulias emphasized public‑safety proposals, such as hiring additional police officers and restoring gun‑shot detection technology, reshaping the dynamics of an already crowded field.

The progression shows the race moving from initial petition filings to a high‑profile entry that quickly established a clear front‑runner, setting the stage for a competitive contest ahead of the October filing deadline.