Theda Skocpol is Victor S. Thomas Professor of Government and Sociology at Harvard University. Her previous works include the prize-winning States and Social Revolutions. Daniel Carpenter is Allie S. Freed Professor of Government at Harvard University and author of the prizewinning books Reputation and Power and The Forging of Bureaucratic Autonomy. At Harvard, he has led the creation of the Digital Archive of Antislavery and Anti-Segregation Petitions and the Digital Archive of Native American Petitions.