You can find voter registration information, forms for registering to vote, polling locations, deadlines, deadlines for the election, and much other useful information at the website of the Cook County Clerk, the office that administers elections in suburban Cook County:
Other voter information sites / places to register:
Cook County Clerk (north suburbs):
5600 W. Old Orchard Road, Room 149
Skokie, IL 60077
Hours: Monday-Friday 9 a.m. to 5 p.m.
Evanston City Clerk
2100 Ridge Ave., #1200
Evanston, IL 60201
Mondays, 8:30 a.m.-noon; 1:00-4:30 p.m.
Tuesdays-Thursdays, 8:30 a.m.-noon; 1:00-6:00 p.m.
Fridays, 8:30 a.m. to 2 p.m.
P: 311 or 847-448-4311