One of the most important consequences of Donald Trump's political ascendance in 2016 was the effect it had on the political engagement of women. They played a leading role in the "Resistance" movement of anti-Trump activism in the 2018 and 2020 elections, which often portrayed Trump as uniquely threatening to women's interests in both his substantive policies and personal behavior. The number of female candidates in the Democratic Party made a noticeable jump in 2018, the first election after Trump became president, and Democratic primary voters seemed especially motivated to express their aversion to Trump by nominating women for Congress and other major offices. The Democratic House majority elected that year contained a record number of women, and in 2020 a majority of non-incumbent Democratic nominees were female for the first time in American history.
Less predictably, the proportion of women nominated by the Republican Party also increased during Trump's presidency. Women rose from 13 percent to 22 percent of all Republican House nominees between 2018 and 2020, and jumped from 18 percent to 33 percent of all non-incumbent nominees. Media reports revealed that Republican officials and interest groups, worried about stereotypes of a male-dominated party, had invested in efforts to recruit more women to run for office. The representation of women in the GOP still lagged well behind the Democrats, but seemed to be on a similar trajectory.
However, the parties have since diverged. The picture for Democrats is of relative stability. Since 2018, the proportion of Democratic House nominees who are women has remained between 42 and 48 percent, as depicted in the figure below. But Republicans proved unable to sustain the growth of female nominees achieved in the 2020 election. This year, 84 percent of Republican House nominees, and 83 percent of non-incumbent nominees, are men.