Recent election outcomes in Europe and beyond reflect a growing scepticism of open borders among the public. From the Brexit vote in the United Kingdom to the election of Donald Trump in the United States, rhetoric that is critical of the organizations facilitating policy co-operation and learning across borders as well as international trade and migration is popular among a growing segment of the electorate. Are these recent developments part of a larger trend of party and electoral change? By focusing on changing patterns in party and electoral competition in the Netherlands, this article suggests that they are. Relying on expert and voter data, it argues that party and electoral politics in the Netherlands are increasingly characterized by both an economic left–right as well as a cosmopolitan–parochial divide. While the former relates to issues of state intervention into the economy, the second refers to stances on European integration, migration and national control in international affairs. This ...