ABSTRACTDue in part to Hillary Clinton’s historic candidacy, gender was a salient dimension of the 2016 US presidential election. In particular, the purported masculinity and femininity of each candidate was on display, discussed extensively in the media, and may have had an impact on citizens’ own gendered beliefs and behaviors. In a longitudinal study of 618 adults (women and men, Democrats and Republicans), we explored changes in gendered self concept and sexism from before to shortly after the election. Male Republicans increased in their conformity to masculine norms following the election, whereas male Democrats decreased in gender collective self-esteem and benevolent sexism and increased in willingness to intervene in everyday benevolent sexist situations. Few meaningful changes emerged for women of either political party. We suggest that the election of a hostilely sexist male leader deepened already held ideological positions and associated behaviors, at least for men.