Replication Data for: Transferring Power to Maintain Control: Decentralization as a National-Level Electoral Strategy in Western Europe

Why do national governments choose to transfer some of their administrative, political, and fiscal powers to regional authorities? This article develops and tests a nationally focused strategic account: decentralization is a targeted means to bolster a governing party’s national-level electoral strength by appeasing the voters of threatening ethnoterritorial parties in national parliamentary elections. Statistical analyses of decentralization across the subnational regions of Western European countries confirm that governing parties transfer additional competencies to regions in which an ethnoterritorial party threat exists, when the government is legislatively vulnerable. In contrast, if a government is not dependent on a region for maintaining national parliamentary control, the presence of a strong ethnoterritorial opponent will not motivate the government to decentralize. These findings help to explain patterns of asymmetrical decentralization across regions within a country and why governing parties decentralize competencies to subnational governments that they do not expect to control.