Grace period: You can also register in person (and vote) at your local elections office during the "grace period." The grace period starts 27 days before Election Day and ends on Election Day. Grace Period Voting does not take place at your regular polling place. Grace Period Voting almost always happens at your local election office. Contact the election authority in your county for more information.
How to Register
You'll need the following information to complete online voter registration:
Your Illinois diver's license of state ID.
The issue date of your identification.
The last four digits of your Social Security number.