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This website describes the public writing of Hahrie Han, an SNF Agora Institute Professor of Political Science at Johns Hopkins University (and formerly the Inaugural Director of the SNF Agora Institute from 2019-2026). She also is the Faculty Director of the P3 Research Lab. The P3 lab seeks to make the participation of ordinary people Possible, Probable, and Powerful, using observational and experimental methods to study civic and political engagement, collective action, organizing, and democratic revitalization. Hahrie has published four books, with her fifth book, Undivided: The Quest for Racial Solidarity in An American Church, published by Knopf in 2024.

UNDIVIDED:
The Quest for Racial Solidarity in an American Church
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PRISMS OF THE PEOPLE:
Power & Organizing in Twenty-First-Century America
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HOW ORGANIZATIONS DEVELOP ACTIVISTS:
Civic Associations & Leadership in the 21st Century
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GROUNDBREAKERS:
How Obama's 2.2 Million Volunteers Transformed Campaigning in America
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MOVED TO ACTION:
Motivation, Participation, and Inequality in American Politics
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