10 ILCS 5/7-45
Whenever a person offering to vote at a primary is challenged, and is not personally known to the judges of election to have the qualifications required in this Article to vote, the person so challenged shall make and subscribe an affidavit in the following form, which shall be presented to and retained by the primary judges and returned by them affixed to the primary poll book or with the official poll record:
State of Illinois)) ss. County of .......) I, ...., do solemnly swear (or affirm) that I am a citizen of the United States, of the age of 18 years or over, and am qualified to vote under and by virtue of the Constitution and laws of the State of Illinois, and am a legally qualified voter of the precinct; that I now reside at ....(insert street and number, if any) in this precinct, and am a member of and affiliated with the .... party; that I have not voted at a primary of another political party within a period of 23 calendar months prior to the calendar month in which this primary is being held; and that I voted at the .... city, village, incorporated town, or town primary, with the .... political party at the .... election held in ...., .... which the .... political party was entitled at such primary to make nominations of candidates for city, village, incorporated town or town offices only, and for no other offices, and that the name or names of no candidate or candidates of the .... political party (the political party with which the primary elector declares himself affiliated) were, at such city, village, incorporated town or town primary, printed on the primary ballot; that I have not signed the petition for nomination of a candidate of a political party with which I am not affiliated, and that I have not signed the nominating papers of an independent candidate for any office for which office candidates for nomination are voted for at this primary. ......................... Subscribed and sworn to before me, this .... day of ...., .... ......................... Judge of Primary
In addition to such affidavit the person so challenged shall provide to the judges of election proof of residence by producing two forms of identification showing the person's current residence address, provided that such identification may include not more than one piece of mail addressed to the person at his current residence address and postmarked not earlier than 30 days prior to the date of the primary election, or the person shall produce the affidavit of one voter of the precinct, who shall be a qualified voter at such primary, and who shall be personally known or proved to the judges to be a voter in the precinct, which affidavit shall be in the following form:
State of Illinois)) ss. County of........) I,...., do solemnly swear (or affirm) that I am a voter of this precinct and entitled to vote at this primary; that I am acquainted with ....(name of the party challenged), whose right to vote at this primary has been challenged; that I know him or her to be an actual bona fide resident of this precinct, and that he has resided herein 30 days, and I verily believe he or she has resided in this State 30 days next preceding this primary; that I verily believe he or she is a member of and affiliated with the .... party. ......................... Subscribed and sworn to before me, this .... day of ...., .... ......................... Judge of Primary
10 ILCS 5/7-45