Rethinking the Relationship between Inclusive Institutions and Political Violence

In this paper we empirically reexamine the debate over the conflict reducing properties of inclusive political institutions. We examine the purported violence reducing effects of proportional representation (PR) electoral systems, parliamentarism, and federalism, conditioning their effects on ethnic fractionalization and whether a country is conflict prone. In other words, are these institutions more effective in countries that have already experienced major conflict or are they more effective in preventing conflict in countries that have not experienced major conflict? Using a data set that includes a sample of 81 countries and 2488 observations from 1973 to 2018, we test the conditional effects of proportional representation electoral systems, parliamentarism and federalism conditioning these by ethnicity and whether the country has experienced a major conflict (i.e., civil war). We find that these institutions have little effect on reducing the number of riots or political deaths, but PR electoral systems reduces ethnic violence when ethnic fractionalization is high. On the other hand PR electoral systems and parliamentarism reduce ethnic violence in conflict prone countries, but federalism increases the likelihood of ethnic violence. We discuss the implications of these findings with regard to arguments regarding inclusive power sharing arrangements and violence in post conflict environments.