This study assesses the effects of changing electoral structure on the representation of women in American state legislatures. Specifically, how does converting from multimember districts (MMDs) to single-member districts (SMDs) affect the proportion of women serving in the state legislature? I use a quasi-experimental design, comparing election results from the four states that eliminated MMDs during the reapportionment following the 1990 census to those in eight states whose systems did not change during this period. The weight of the evidence suggests that abandoning MMDs for SMDs decreases the representation of women in state legislatures.
Coattails and spillover-effects: Quasi-experimental evidence from concurrent executive and legislative elections