New research explores how voter-endorsed withdrawals from international institutions like Brexit influence public opinion abroad. Using survey data from 58,959 EU-27 Europeans and 2,241 Swiss voters collected during key political moments, the analysis finds both encouragement and deterrence effects.
Survey Data:
- Original survey: EU-27 citizens (6 waves)
- Additional survey: Swiss voters (2 waves) around Brexit extension vote
The findings reveal complex voter responses:
- Voters with positive views of withdrawal are more likely to support it elsewhere
- Negative experiences tend to deter similar actions abroad
- Effects depend on information access and attention levels
- Motivated reasoning plays a significant role in shaping opinions

