The Impact of the European Union on Coalition Formation in a Minority System: The Case of Denmark

Does European Union membership influence coalition patterns in national parliaments? For governments in the Scandinavian countries – with their relatively high share of minority governments requiring external parliamentary support to form parliamentary majorities – the question of ‘coalition management’ is highly relevant. This article provides an empirical test of three central arguments in the Europeanisation literature on the impact of EU membership on national parliaments when political parties pass legislation in the Danish Folketing. The effect of EU content in a law on coalition patterns is compared across policy areas and four electoral periods from 1998 to 2011 encompassing 2,894 laws. The data provide support for the argument that the loss of national agenda‐setting over the legislative process has an impact on coalition patterns in the Danish parliament. It is shown that the coalition patterns on Europeanised legislation are both broader and more stable compared to national, non‐EU‐related legislation. The focus on Europeanisation of legislative coalitions goes beyond previous analysis with an institutional focus, and demonstrates an example of how the EU systematically has an effect on legislative coalition formation in a national parliamentary system.