Women earn approximately half of all bachelor’s degrees in political science but they comprise only 22% of full professors. Scholars have offered various likely explanations and proposed many interventions to improve women’s advancement. This article reviews existing research regarding the effectiveness of these interventions. We find that many of the proposed interventions have yet to be fully evaluated. Furthermore, some of the policies that have been evaluated turn out to be ineffective. Women’s mentoring and networking workshops are the most promising of the fully tested interventions. The potential for failure underscores the need for additional evaluation of any proposed intervention before widespread implementation.