10 ILCS 5/9-7

(1) Except as provided in subsection (2), the treasurer of a political committee shall keep a detailed and exact account of- (a) the total of all contributions made to or for the committee; (b) the full name and mailing address of every person making a contribution and the date and amount thereof; (c) the total of all expenditures made by or on behalf of the committee; (d) the full name and mailing address of every person to whom any expenditure is made, and the date and amount thereof; (e) proof of payment, stating the particulars, for every expenditure made by or on behalf of the committee. The treasurer shall preserve all records and accounts required by this section for a period of 2 years. (2) The treasurer of a political committee shall keep a detailed and exact account of the total amount of contributions made to or for a committee at an event licensed under Section 8.1 of the Raffles and Poker Runs Act. For an event licensed under Section 8.1, the treasurer is not required to keep a detailed and exact account of the full name and mailing address of a person who purchases tickets at the event in an amount that does not exceed $150.