"This article contributes to the ongoing discussion on how tolerance may be fostered in Western European countries and to the question of how contextual factors such as welfare state expenditures may contribute to this formation. Tolerance is understood as a basic democratic principle that helps civil societies cope with rising levels of diversity stemming from increased immigration and individualism. Within the tolerance literature, it is commonly agreed upon that a comprehensive welfare state is capable of bridging class divides and overcoming social categorization. However, over the past decades, European welfare states experienced an ongoing influx of immigrants, challenging their general purpose and increasing notions of ‘welfare chauvinism'. Drawing on insights from both tolerance and welfare state solidarity literature, we implement hierarchical analyses based on Eurobarometer data to assess the potential influence of welfare state universalism on political and social tolerance in 15 Western European countries. Moreover, we demonstrate that this relationship is highly conditional on the degree of ethnic heterogeneity within a country. "

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