Tuesday is the last standard day Illinois residents can register to vote in the April 7 election.
The April municipal ballot will include positions such as mayor, school boards and park district boards.
Illinois residents can register online at https://ova.elections.il.gov/, at driver's license facilities, at village, township and county clerk offices or by other deputy registrars.
After voter registration ends, a grace period follows. The state requires that any resident registering during the grace period must do so in person at a designated location and must vote at the same time. Locations where this can take place include a county clerk or Board of Election Commissioners.
"The first step to make sure you have a say in how your town or school district is governed is to make sure you're registered to vote," Cook County Clerk David Orr said.
Illinois residents can start voting early in person starting March 23, and elections officials are already accepting mail ballots.