Information for the General Election Primary: Tuesday, March 17, 2026
IMPORTANT DATES FOR VOTERS
- Early Voting Begins at Markham Courthouse: Wednesday, Feb. 18, 2026
- Early Voting Begins at Prairie State College & Matteson Community Center: Monday, March 2, 2026
- Last Day for Online Voter Registration: Sunday, March 1, 2026 (click here)
- Vote by Mail Drop Boxes Open: Monday, March 2, 2026 (find locations here)
- Election Day: Tuesday, March 17, 2026 - Polls are open from 6 a.m.-7 p.m. (find your location here)
Questions? Contact the Cook Country Clerk's Office at 312-263-7967
Additional Links
Please note: Information provided here is as a courtesy only and is not to be considered legal advice. Candidates remain responsible for compliance with all election laws, including filing requirements and sufficiency of forms. Helpful information is available in the State of Illinois Handbook Candidate's Guide 2025, which may be obtained when available from the State Board of Elections at 217-782-4141 or at www.elections.il.gov. Forms needed — such as the Petition for Nomination Sheets, Statement of Candidacy and optional Loyalty Oath — can be found on this website. All election information should be confirmed through your attorney or the State Board of Elections.