Suchergebnisse

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.

Delegation of powers represents a grant of authority by politicians to one or more agents whose powers are determined by the conditions in enabling statutes. Extant empirical studies of this problem have relied on labor-intensive content analysis that ultimately restricts our knowledge of how delegation has responded to politics and institutional change in recent years. We present a machine learning approach to the empirical estimation of authority and constraint in European Union (EU) legislation, and demonstrate its ability to accurately generate the same discretionary measures used in an original study directly using all EU directives and regulations enacted between 1958–2017. We assess validity by training our classifier on a random sample of only 10% of hand-coded provisions and replicating an important substantive finding. While our principal interest lies in delegation, our method is extensible to any context in which human coding has been profitably produced.