AbstractThis study analyzes whether the personality traits of Members of Parliament (MPs) affect their attitudes toward the representation of gender equality issues. Based on the Big Five personality traits, we argue that Openness to Experience and Conscientiousness shape MPs' positions toward gender equality policies through two different pathways. The first pathway proposes a direct connection. While Openness is expected to positively affect MPs' support for gender equality, Conscientiousness is assumed to have a negative impact. The second pathway runs indirectly, linking Openness and Conscientiousness to preferences toward gender equality through the effect of these personality traits on MPs' general ideological positions. Using data from a survey of elite politicians in Germany and Switzerland, the results of a causal mediation analysis show a positive direct effect of Openness that holds independent of a mediating influence of political ideology. The analysis deepens our understanding of gender equality legislation and the MPs engaging in it.