The city's board of election commissioner says getting more than 10,000 new registrations recorded each day.
And to help alleviate crowds, the board's offices at 69 West Washington and at City Hall will be open until midnight next Tuesday. They'll also provide drive up services. An ID is required.
"We like driver's licenses, state-issued ID, or at a minimum a utility bill, which would link the person to the address in which they are trying to register from," said Langdon Neal, Chicago Board of Elections Commissioners.