The reverberations of British Brexit politics abroad

How do foreign political events shape voters’ evaluation of policies whose outcomes are hard to observe? We argue that policy-specific political processes abroad provide information about the policy's feasibility and desirability that allows voters to update their preferences. We analyze how key events in British Brexit politics affected attitudes towards the European Union in other European countries. The results of ‘unexpected events during survey' designs, a natural experiment, and a panel analysis show that events highlighting the difficulties of the United Kingdom's withdrawal from the European Union led to a higher support of European integration in remaining member states, whereas an event highlighting the opportunities of Brexit resulted in more Eurosceptic attitudes. The article demonstrates that foreign events can influence voters’ policy attitudes in other countries, highlighting the systemic consequences of events like Brexit.