505 ILCS 95/9
The milk promotion program established by this Act shall remain in effect for 5 years. Thereafter, the program shall automatically be extended from year to year unless a referendum for disapproval is requested by written petition of no less than 10% of the affected producers from each respective district. The Milk Promotion Board shall conduct a referendum in accordance with Section 7 of this Act, within 180 days of receipt of a petition for discontinuance of the program, to determine the continued approval of such milk promotion program as indicated by a majority of producers voting to continue. Continuation or termination shall be determined by the same voting requirements for adoption of the milk promotion program set forth in Section 7.
505 ILCS 95/9