Illinois is often touted as a “No ID state.” While IDs are not required at the time of voting (unless you are registering at that time), IDs are verified during the registration process.
When an individual registers to vote, two forms of identification must be presented, one of which showing the current residential address. The applicant must also provide either the last four digits of their social security number or their Illinois Driver’s License/State ID number. The Election Commission verifies through either the Social Security Administration or the Illinois Secretary of State’s office if the number provided is correct.
No matter how you cast your ballot, by mail, early voting, or on election day, the same process is used to verify the voter. This process is completed through signature verification. This is Illinois state law. Two election judges, one from each political party, compare the signature on file with the signature captured at the time of voting. The signature on file was captured at the time of registration. If both judges agree the signatures match, you move forward in the voting process. If the judges do not agree the signatures match, you will be asked to present identification for verification. Only one judge must disagree for a signature challenge to occur.