Agri-food policy is a privileged field of study that can further the analytical knowledge of interest group politics, government and interest group relations, and lobbying strategies in a changing policy domain. Agri-food policies are designed to support and influence the operations around production, processing, and consumption of food, and a significant public intervention is dedicated to this peculiar policy domain. Studies on agricultural exceptionalism reveal state interventionism in past national policies, the special treatment given to the sector and the privileged position reserved for agricultural interests. Powerful farmers' groups and dedicated institutions in compartmentalized policymaking developed special relationships: in different contexts, iron triangles, close policy communities, or corporatist alliances