This book investigates the relationship between geographic mobility and political polarization in the United States. Irwin L. Morris, a political scientist, examines whether Americans are increasingly choosing to live in communities that align with their ideological preferences. By analyzing demographic data and voting patterns, the author argues that the phenomenon of 'sorting' significantly impacts the national political landscape and local governance.

Experts in political science and sociology recognize this work as a significant contribution to the study of American political geography. Readers frequently note the academic rigor of the data analysis and the clarity with which the author explains complex demographic trends.