Hundreds of training and support programs for women political candidates have emerged in the United States as increasing numbers of women run for elected office. Drawing on two years of ethnographic research with Republican and Democratic programs, I outline how the groups not only provide skills training but also function as supportive social networks that propel women into leadership, toeing the line between rethinking what leadership looks like and encouraging participants to adopt entrenched practices that reflect existing gendered norms. A qualitative investigation shows that the “sisterhood” created through training is a crucial support system for alumnae, less robust but perhaps particularly important for Republican women whose party leaders and institutions are less willing to support women as an identity group. Training networks vary in the amount of support and resources they can provide, but program alumnae across the board seek to help each other socially, emotionally, and materially with advising, mentorship, volunteering, and fundraising. By helping participants band together to propel each other into elected office, women’s candidate training organizations can serve as substitutes for elite traditional fundraising and mentorship “boys’ club” networks. They are an increasingly important mechanism through which members of historically excluded communities can gain power.