To check if you are registered to vote in IL:
https://ova.elections.il.gov/RegistrationLookup.aspx

Paperless online voter registration & it is active until 16 days before Election Day:
https://ova.elections.il.gov/

Election Offices of all the States in USA:
https://www.usa.gov/election-office

Election Commission website for Dupage Residents:
https://www.dupageco.org/election/

Vote by mail application in Dupage County:
https://www.dupageco.org/Election/Voting/41942/

Election Commission Website for Will County Residents:
http://www.thewillcountyclerk.com/elections/

Vote by mail application in Will County:
http://www.thewillcountyclerk.com/elections/voter-services/vote-by-mail/

Your vote counts!!