Published online by Cambridge University Press: 25 January 2021
What makes some lawmakers more effective than others is a central question in American politics. Recent research has emphasized the role of informal, persuasive leadership, but this research has focused almost exclusively on Congress, so it is unclear whether this approach to lawmaking is generally effective. Analysis of state legislatures is hampered by the lack of a theoretically sound and practically feasible measure of legislative effectiveness. I offer a solution to the primary problem with traditional hit rates. I apply this approach to North Carolina legislators and show my effectiveness estimates correspond with expert evaluations. I then examine recent terms of the Michigan, Georgia, and North Carolina legislatures to evaluate the relative importance of formal and informal powers at the state level. I hypothesize and find that informal, persuasive leadership is not effective in state legislatures where lawmaking is better explained by formal, hierarchical authority.