Ill. Admin. Code tit. 20, § 1610.180
a) All applications for pardons, reprieves and commutations of sentence or adjudication shall be made by written petition, addressed to the Governor and filed in the office of the Prisoner Review Board at Springfield. The original and four copies of the petition must be filed at least thirty (30) days prior to any scheduled meeting of the Board for the purpose of hearing petitions for executive clemency. The petition shall conform to the following requirements: