FREDERICK J. BOEHMKE
University of Iowa


The Initiative Process and the Dynamics of State Interest Group Populations

What effect does the initiative process have on the volatility of interest group populations? Theoretical results suggest that interest group communities in initiative states should be characterized by greater rates of entry and exit since the presence of the initiative process increases mobilizations by potentially less stable groups, particularly broad-based citizen groups. I test this prediction using data on state interest group lobby registrations in 1990 and 1997. Tabular and regression analysis of exit and entry rates for all groups as well as separate analyses for different kinds of groups, including citizen, economic, membership, institutions, and associations, are consistent with the prediction, with the effect strongest and most consistent for citizen and membership groups.