Calla Hummel is an assistant professor of political science at the University of Miami. Her studies focus on the conditions under which marginalized people form politically influential interest groups. In particular, she explores when and why informal workers organize to lobby the state. Grants from sources like the National Science Foundation and the Department of Education have allowed her to conduct field research with street vendor unions in La Paz, Bolivia and São Paulo, Brazil. Her findings have been published widely, and a recent paper won the 2017 Alexander George Best Article Award. Hummel also worked as a visiting scholar in the graduate program in development at the Universidad Mayor de San Andres during the 2014-15 academic year. She holds a PhD in political science from the University of Texas at Austin.