Distributors of cigarettes earn some monopoly profits in their local markets but see them slowly erode as substitutes enter the market. Suppose Nebraska has scheduled a vote on the legalization of marijuana. Additionally, suppose that marijuana and cigarettes are substitutes and that the legalization of marijuana would lead to a decrease in the price of marijuana.

Given the relationship between marijuana and cigarettes, the legalization of marijuana would lead to in demand for cigarettes. Thus, distributors of cigarettes would likely the legalization of marijuana.