Résumé en anglais

Our aim is to merge the traditional literature on the determinant of success of special interests with the new political economy of international union. We create a political economy model of allocation of public spending among different interests. We apply it to an environment of International Union, which is viewed as a delegation process of a set of targeted public goods from national to a union-level of decision. Delegated interests are favored at the expense of other groups in the society. Therefore political integration per se can be viewed as a determinant of success of special interest politics.