We investigated why women may have lower desires and intentions to apply to become a member of a leadership group (i.e., committee) than men when the majority of its members are men. In four studies, we examined the interaction between gender and gender composition of the leadership group on leader candidates’ sense of power, desire to lead, and intentions to apply to become a member of a leadership group. Informed by research on gender, perceived power, and the model of goal-directed behavior, we found that women, compared to men, expected lower sense of power when considering applying to a majority-male (vs. gender-balanced) online leadership committee (Study 1A, N = 294; Study 1B, N = 278). This pattern observed for women in majority-male leadership committees was not, however, evident for men in majority female leadership committees (Study 2, N = 560). Furthermore, women’s lower sense of power explained why they expressed lower desires to lead and intentions to apply for a majority-male leadership committee compared to men. Finally, we found that increasing women’s sense of power increased their desires and intentions to lead in a majority-male committee (Study 3, N = 460). We contribute to understanding why there still exists a discrepancy in the number of men versus women in leadership groups despite ongoing efforts to reduce it. We hope readers will apply these findings by identifying ways to increase women leader candidates’ sense of power in order to increase women’s representation on leadership committees and groups (e.g., boards).