10 ILCS 5/6-39
Upon the Wednesday and Thursday following the last day of registration, and upon the Wednesday and Thursday following the last day of precinct registration provided for in Section 6-49.1 of this Article, if so much time is required, the 2 deputy registrars shall go together and canvass the precinct for which they have been appointed, calling at each dwelling place or each house from which any one is registered in such precinct and each dwelling place as indicated upon said "Verification Lists"; and if they shall find that any person whose name appears upon their verification lists does not reside at the place designated thereupon, they shall make a notation in the column headed "Remarks" as follows: "Changed Name"; "Died", or "Moved", as the case may be, indicating that such person does not reside at such place.
Whenever deemed necessary by the canvassers, or either of them, he or they may demand of the person having command of the police in such precinct to furnish a policeman, to accompany them and protect them in the performance of their duties; and it shall be the duty of the person having command of the police in such precinct to furnish a policeman for such purpose. In such canvass no person shall refuse to answer questions and give the information asked for and known to him or her, or shall knowingly give false information, or make false statements. In making such canvass the canvassers shall make special inquiry at the residence or place designated on the verification lists, as to all the persons registered as qualified voters, and shall receive information from judges of election, party canvassers, or other persons.
10 ILCS 5/6-39