Lacking tools to measure substantive representation, empirical research to date has determined women’s substantive representation by identifying “women’s interests” a priori, with little attention to differences across race, class, or other inequalities. To address this problem, I develop the concept of intersectional interests and a method for identifying these. Intersectional interests represent multiple perspectives and are forged through a process of political intersectionality that purposefully includes historically marginalized perspectives. These interests can be parsed into three types: expansionist, integrationist, and reconceived. Identification of intersectional interests requires, first, an inductive mapping of the differing women’s perspectives that exist in a specific context and then an examination of the political processes that lead to these new, redefined interests. I demonstrate the concept of intersectional interests and how to identify these in Bolivia, where I focus on the political process of forging reconceived intersectional interests in Bolivia’s political parity and pension reforms.