Research interests: American politics. Development of political institutions, particularly in the United States.  Political economy of public bureaucracies and government regulation, particularly regulation of health and financial products. 

Carpenter has recently launched a long-term project on petitioning in North American political development, examining comparisons and connections to petitioning histories in Europe and elsewhere. Together with colleagues at Harvard, Radcliffe and the Massachusetts Archives, he launched the Digital Archive of Massachusetts Antislavery and Anti-Segregation Petitions in 2015.

Research interests:  American political behavior, public opinion, minority politics, and urban and local politics.

Research interests: International trade, foreign investment, immigration, development, government accountability, and private sector initiatives and standards for addressing social and environmental issues in global supply chains.

Research interests: Comparative political economy, electoral politics, and applied formal theory. Currently completing a book-length project with David Soskice on the political representation of economic interests in historical perspective.

Research interests: American politics, with a focus on American political institutions, political economy, and electoral politics. Executive branch politics and the presidency in the contemporary and historical periods.