In their study on the effects of women's electoral success on subsequent female political participation, Bhalotra et al. (2018) implement the following empirical strategy: O a. A regression discontinuity design comparing states where women narrowly won elections with those where women narrowly lost O b. A regression discontinuity design comparing constituencies where women narrowly won elections with those where women narrowly lost O c. 2SLS regression with the constituency gender ratio as the IV O d. A difference-in-differences approach comparing constituencies before and after a female electoral victory