Welcome to Electoral Incentives for Interparty and Intraparty Politics

Home of the I³ Dataset and Dashboard

Electoral System Incentives for Interparty and Intraparty Politics uses novel computational tools and the most comprehensive and updated dataset on electoral systems to test whether electoral rules explain variation in interparty politics --- the effective number of parties, parties’ locations in the policy space, congruence between citizens’ preferences and policy --- and intraparty politics --- the content of campaigns, the amount of constituency service provided, the shape of legislative institutions, levels of party discipline, and the balance struck between programmatic policy and pork barrel politics. This website includes additional material that will help you understand how electoral component rules shape the political arena in modern-day polities.

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