This article tests an often‐stated assumption in the “machinery of government” literature: that government parties’ issue and policy preferences affect the ministerial structure. Using a new Dataset on Immigrant Integration Governance (DIIG) that documents the ministerial structure of immigrant integration in 16 Western European countries during 1997–2017, the analysis finds that divergence and change characterize the ministerial structure. The analysis finds that right‐oriented governments are more inclined to couple integration with immigration and justice than are left‐oriented governments, indicating different policy preferences. However, it does not find that governments with radical parties are more inclined to signal “integration” in ministerial titles. The study's comparative approach challenges the generalizability of existing knowledge on drivers of ministerial changes. Additionally, it fills a gap in current immigrant integration literature: the study of the horizontal governance structure.
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