Electoral Institutions, Hometowns, and Favored Minorities: Evidence from Japanese Electoral Reforms

Abstract

This article presents evidence that electoral institutions affect the geographic distribution of both candidate electoral support and government resources. The author exploits two electoral reforms in Japan to identify the effect of institutional incentives: (1) the 1994 electoral reform from a multimember single nontransferable vote (SNTV) system to a mixed-member majoritarian (MMM) system with a single-member district (SMD) component and a proportional representation component; and (2) the 1925 electoral reform from a predominantly SMD system to a multimember SNTV system. Using several new data sets, the two main findings of this article are that (1) Japanese representatives competing in multimember SNTV districts had more geographically concentrated electoral support than those competing in SMDs and that (2) intergovernmental transfers appear to be more concentrated around Liberal Democratic Party (LDP) incumbents' home offices under the multimember SNTV system than under the MMM system. The findings in this article highlight the connection between institutions and geographic patterns of representation.