Migration, Immigration, and the Political Geography of American Cities

How do migration and immigration shape the political geography of American cities? In this article, we propose a mechanism of partisan sorting and demographic change which is tested using the mass migration of African Americans from New Orleans to Houston, Texas in the aftermath of Hurricane Katrina. We argue that differences in residential choice preferences among partisans combined with demographic changes which increase diversity can induce sorting by triggering flight (migration) among ideological conservatives. Using Hurricane Katrina evacuee data from schools in Harris Country along with a variety of empirical tools, we find evidence suggesting that African American Hurricane Katrina migration led to Republican flight