235 ILCS 5/6-17.1
The General Assembly hereby finds and declares that for the purposes of ensuring that all retail licensees have the opportunity to receive alcoholic liquor, reducing the amount of spoiled and overaged alcoholic liquor sold to customers, and maintaining the distribution system and the State's ability to regulate against illegal importation of alcoholic liquor, it is necessary to prevent discrimination among retail licensees as provided in this Section.
A distributor or importing distributor designated as a distributor or importing distributor for alcoholic liquor within a designated geographic area or areas under Section 6-9 of this Act shall use its best efforts to make available for sale to retail licensees, in its designated geographic area or areas, each brand of alcoholic liquor which the distributor or the importing distributor has been authorized to distribute. Nothing in this Section prohibits a distributor or importing distributor from establishing purchase requirements unless the requirements have the effect of excluding a majority of the retail licensees in the designated geographic area or areas from purchasing the alcoholic liquor.
235 ILCS 5/6-17.1