This Article uses the example of international women’s political rights to examine the value of comparative methodologies in analyzing the process by which nations internalize international norms. As internalized in Brazil and France, the Convention on the Elimination of All Forms of Discrimination Against Women suggests possibilities for (and possible limitations of) interdisciplinary comparative and international law scholarship. Indeed, international law scholarship is divided between theories of internalization and neorealist challenges to those theories. Comparative methodologies add crucial complexity to internalization theory, the success of which depends on acknowledging vast differences in national legal cultures. Further, comparative methodologies expose important weaknesses in the neorealist understanding of international human rights law.