The perception exists that more interest groups register over time. However, this study finds registered lobbyists per organization have increased steadily since the late 1980s.

Data & Methods

This research utilizes a newly compiled dataset tracking lobbying activity across multiple decades in all American states.

Key Findings

• Lobbying intensity among registered groups has significantly grown despite stable registration numbers

• Term limits and lobbying regulations are the primary drivers of this increase

• Political dominance (one-party systems) influences multiclient lobbying practices

Why It Matters

These findings demonstrate how institutional reforms shape political access in state governments. They provide empirical evidence for understanding modern American political engagement beyond simple descriptive representation theory.