LAUSR

Critical mass theories predict that women in government will sponsor and vote for more women and feminist bills as their numbers increase. Using Voteview.com data of roll-call votes measuring left–right ideology from 1977 to 2019 this paper shows that ideological divides among women in the U.S. House of Representatives have deepened rather than veered in a liberal direction. Republican women have moved rightward over time and more conservative ones are winning elections. Belonging to a politicized generation, older Silent Generation and Boomer women are more ideologically extreme than younger women. Parties are also elevating their more ideological female members. As their numbers increase, female House members are expected to remain ideologically diverse in a polarized legislative environment. Critical mass theories are deficient in failing to place female political actors in a dynamic workplace.