Abstract:
This article argues that internal substate dynamics can systematically account for the organization of intergovernmental relations (IGR) in dual federal systems. Whereas majoritarian executive-legislative relations tend to weaken the institutionalization of intergovernmental arrangements (IGAs), power-sharing executive-legislative relations tend to facilitate it. Two of the mechanisms at work serve to illustrate this point. Given one-party majority cabinets, complete government alternations strongly alter actors' interest constellations over time, thereby increasing the costs of maintaining stable cross-boundary IGR. Moreover, the heavy impact of a potential electoral loss induces politicians to shift blame to other governments, thereby undermining cross-boundary cooperation. Majoritarian dynamics also weaken integration between IGAs. Furthermore, integration is weakened by compulsory power-sharing structures unbridged by party ties. In contrast to noncompulsory party cooperation, such internal constitutional divides easily undermine the setup of strong interorganizational linkages