Be Careful what You Count: Updating Legislative Turnover in the 50 States

Legislative turnover is indicative of political careerism, district competitiveness, and the strength of the incumbency advantage. Although there are many examinations of legislative turnover in U.S. state legislatures, there has not been an update in nearly 2 decades. One limitation of the existing turnover measures is the inability to distinguish between naturally occurring turnover and the artificial turnover caused by term limits. In this research note, I present an update to legislative turnover from 2002 to 2018 and discuss the importance of using updated data, as well as avenues for future research.