Abstract
All 50 U.S. states currently regulate lobbying. Data restrictions, however, limit our understanding of the relationship between legislative lobbying laws and interest group influence within the legislative process over time. A comparable measure of these laws published in the summer 2005 issue of State Politics and Policy Quarterly suggests a dynamic analysis. The early 1990s witnessed a marked increase in the stringency of state legislative lobbying regulations. This article examines how lobbying regulation impacted interest group influence across all 50 state legislatures in 1995. I then determine whether changes in a states regulations affected interest group influence over time from 1990 to 1995. Evidence suggests that increased regulation reduces influence both across and within states over time.
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