How to register to vote in Illinois

By NPR staff
  •   Last revised Friday, Feb. 13, 2026

Key links

General information Check voter registration status Register online Change registration

Deadlines for March 17 primary election

Online Register by Sunday, March 1
By mail Postmarked by Tuesday, Feb. 17
In person Register by Tuesday, March 17
During the "grace period" after the registration deadline, eligible voters can register at local election offices through Election Day.

Last updated Feb. 13, 2026. Military and overseas citizen voters may have different registration deadlines.