Broockman's research considers how voters and politicians decide, generally using field experiments and other approaches that allow for rigorous causal inferences to be drawn. Broockman’s published academic work spans the topics of public opinion, voter behavior, and research methodology. During his career in the private sector, Brookman designed and implemented field experiments at the AFL-CIO, the Analyst Institute, Google, and CREDO Action.
Tests theories of how politicians are constrained or unconstrained by, and interact with, public opinion.
Finds that the election of additional women in competitive US state legislative elections has no discernible causal effects on other women's political participation at the mass or elite levels.
Argues that members of Congress grant preferential access to purported political donors over concerned constituents. Is the first experimental demonstration of the biasing role of money in politics.
Employs a unique experimental design to demonstrate that black politicians are more intrinsically motivated to represent blacks’ interests than are whites. When the incentives of politicians to respond to a putative request from a black individual are experimentally reduced, black politicians generally continue to provide representation though white politicians generally do not.