Gender Differences in Party Identification

Significant gender differences in party identification have been evident since the early 1980s, whereby larger proportions of women than men are Democrats and larger proportions of men than women are Republicans. Gender differences were smaller and more variable before 1980. 

Below are data on party identification of men and women from 1952 to present day. Data are from the American National Election Study (ANES) Times Series Data. Note that "Strong Democrat/Republican" and "Lean Democrat/Republican" are aggregated in the data below.