Scotland's electorate voted to remain in the European Union during the 2016 referendum, bucking the UK's decision to leave. That divergence has become central to the independence debate.

The Scottish National Party, which leads the devolved government in Edinburgh, has made returning to the EU a core policy objective, arguing that independence would allow Scotland to rejoin the bloc and align with the economic and social preferences of its voters.

The UK Government in London maintains that the decision to leave the EU applies to the entire United Kingdom and has resisted calls for a second Scottish independence referendum. The dispute reflects a fundamental tension: those who back independence see EU membership as a path to prosperity, while opponents argue that remaining within the UK provides greater economic stability.