Replication Data for: Losers Together? Grand Coalitions in the EU member states

Over the last two decades, the formation of grand coalitions has grown in the European Union (EU), even in countries with no previous political experience with them. Alongside a significant rise in both new and radical parties, grand coalitions signal the increasing fragmentation of contemporary European politics. We, therefore, investigate the electoral performance of both mainstream and new parties entering and leaving grand coalitions. We find that mainstream parties do not appear to enter grand coalitions after negative election results. They are, however, punished in the following elections, albeit not as heavily as previous findings have shown. This post-grand coalition electoral penalty is true for both major and minor grand coalition members. These findings contribute to the literature on party competition and provide insights into the choices mainstream parties’ have been making in response to recent and rapid changes in the electoral landscape of the EU.