An "inactive" voter may need to show identification to prove eligibility to vote. An inactive voter may vote IF he or she meets all legal requirements, completes an affidavit and provides proof of residence at the address on the registration. Acceptable identification includes a driver's license, social security card, utility bill, employee or student identification card, credit card, civic/union/professional association membership, public assistance card or library card -- so long as one of those IDs includes that their current address matches the address on the registration. Voter registrations become "inactive" if the voter has not responded to notices that question whether the person still resides at their original address or otherwise challenge the validity of the registration. "Inactive" voters may have changed addresses, permanently or temporarily, and not updated their registrations to their new addresses. "Inactive" voters' names are currently on file, but they may be removed after two federal election cycles if they have not shown that their registrations are still valid. A voter who moved within 30 days prior to the election and still lives in the State of Illinois must complete an affidavit and provide two pieces of acceptable identification, one of which must show their current address.