Elections

The Cook County Clerkʼs office is the chief election authority for more than 120 towns and villages in suburban Cook County.

Notice: Use of a Sharpie marker to mark a ballot does not invalidate the ballot. This claim has been identified as election misinformation by the Department of Homeland Security.

Suburban Voters can check on their registration status, polling places and more.

There are several ways to register to vote in Cook County: in person, by mail, online and even on Election Day.

Suburban Cook County registered voters can vote at their polling place on Election Day. Ballots can also be cast by mail or in person at Early Voting sites throughout Cook County.

Key dates, deadlines, tools & information for voters & candidates for the 2021 Elections.

Official results, data, analysis & Post-Election Reports for elections held in suburban Cook County.

Become an Election Judge & get paid to ensure that polling places run smoothly & voters are properly served on Election Day.

Important dates, information & deadlines for prospecive candidates & elected officials. 

Each voter in Cook County is represented by officials on many levels. Use the Directory of Elected Officials to find the public officials who represent your household.

The Cook County Clerk’s office produces a plethora of maps pertaining to elections and taxing districts. All of our available maps are posted here as PDFs.

Information on election security including FAQs, videos, white paper and pamphlet.