The Roll Call Behavior of Men and Women in the U.S. House of Representatives, 1937–2008

Our analysis investigates the ideological differences in the voting records of male and female members of the U.S. House of Representatives using a relatively novel natural-experiment research design to account for variations in district-level factors. We ask whether it makes a difference when a woman succeeds a man or a man succeeds a woman in a given congressional district. To answer this question, we created a database consisting of predecessor-successor pairs in all elections to the House between 1937 and 2008. In the case of intraparty change, we find that there is no significant difference in the voting scores of female and male members of the House; the roll call scores of female Democrats who replace male Democrats are virtually identical, as are the scores of male Democrats who replace female Democrats. The same results hold for Republicans. We also demonstrate that when interparty change occurs in a district, there is no evidence that the resulting ideological change is greater when the successor or predecessor is a woman. In other words, the voting records of consecutive members of Congress that come from a particular district are virtually the same regardless of their gender.