Replication data for: Sources of Variation in the Frequency of Statewide Initiatives: The Role of Interest Group Populations

In this article I study the factors that determine the number of initiatives that appear on statewide ballots, with an emphasis on the characteristics of state interest group populations. In particular, I test whether the size of state citizen or economic group populations influences the frequency of initiative use. The relationship between these two categories of groups and initiative use is important in light of recent claims that the initiative process no longer benefits citizen groups and is now dominated by economic interests. In addition, I consider the role of other factors, including initiative regulations, state political characteristics, state economic performance and state demographic characteristics. My results indicate that states with more citizen groups have more initiatives overall and in specific issue areas and that the number of economic groups has a negative or negligible effect.