Reingold studies the politics of gender and race in the U.S. She is primarily interested in issues of identity and representation, and questions about who represents whom (or what). Much of her current research is on the impact of gender, racial, and ethnic diversity in state legislatures. She and her colleagues are examining how the presence and behavior of “minority” legislators affect policymaking in the states. Her research often highlights the experiences, activities, and accomplishments of legislative women of color, as compared to those of white women and men of color, in order to recognize the diversity within and among under-represented groups, as well as the overlapping, intersecting, and interdependent nature of gender, race, and ethnicity. In this capacity, Reingold has served as a member of Project Vote Smart’s Key Vote Advisory Board since 2006.