10 ILCS 5/6-35.03
The State Board of Elections shall design a registration record card which, except as otherwise provided in this Section, shall be used in triplicate by all election authorities in the State, except those election authorities adopting a computer-based voter registration file authorized under Section 6-79. The Board shall prescribe the form and specifications, including but not limited to the weight of paper, color and print of such cards. Such cards shall contain boxes or spaces for the information required under Sections 6-31.1 and 6-35 of this Code; provided, that such cards shall also contain a box or space for the applicant's social security number, which shall be required to the extent allowed by law but in no case shall the applicant provide fewer than the last 4 digits of the social security number, and a box for the applicant's telephone number, if available.
Except for those election authorities adopting a computer-based voter registration file authorized under Section 6-79, the original and duplicate cards shall respectively constitute the master file and precinct binder registration records of the voter. A copy shall be given to the applicant upon completion of his or her registration or completed transfer of registration.
Whenever a voter moves to another precinct within the same election jurisdiction or to another election jurisdiction in the State, such voter may transfer his or her registration by presenting his or her copy to the election authority or a deputy registrar. If such voter is not in possession of or has lost his or her copy, he or she may effect a transfer of registration by executing an Affidavit of Cancellation of Previous Registration.
In the case of a transfer of registration to a new election jurisdiction, the election authority shall transmit the voter's copy or such affidavit to the election authority of the voter's former election jurisdiction, which shall immediately cause the transmission of the voter's previous registration card to the voter's new election authority. No transfer of registration to a new election jurisdiction shall be complete until the voter's old election authority receives notification.
Deputy registrars shall return all copies of registration record cards or Affidavits of Cancellation of Previous Registration to the election authority within 7 working days after the receipt thereof. Such copies or Affidavits of Cancellation of Previous Registration received by the deputy registrars between the 35th and 28th day preceding an election shall be returned by the deputy registrars within 48 hours after receipt thereof. Such copies or Affidavits of Cancellation of Previous Registration received by the deputy registrars on the 28th day preceding an election shall be returned by the deputy registrars to the election authority within 24 hours after receipt thereof.
10 ILCS 5/6-35.03