Abstract
Serious comparative research on postwar immigration politics and policy began only 30 years ago and did not really take off until the 1990s. The level of interest of scholars has naturally followed the salience of immigration issues in the politics of liberal democracies. A flood of new research is now appearing, making a review of where research has come so far timely. Immigration research in political science has confronted a number of challenges, several of which are examined here: (a) the merits and limits of comparative case studies, (b) the wedding of economic theory with political analysis, (c) the analysis of the consequences of ethnic diversity on support for redistributive social policies, and (d) the possible contradictions of a popularly supported liberal immigration policy.
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