(1) The petition may consist of one sheet or several sheets, identical in form and fastened together after being circulated and signed so as to form a single, complete petition before being delivered to the county clerk and recorder. The petition must give the post-office address and voting precinct of each petitioner.
(2) Only persons who are qualified to sign the petitions are qualified to circulate the petitions, and there must be attached to the complete petition the affidavit of a person who circulated or assisted in circulating the petition that the person believes the signatures on the petition are genuine and the signers knew the contents of the petition before signing it.