https://en.wikipedia.org/wiki/Referendums_related_to_the_European_Union
This is a list of referenda related to the European Union, or referendums related to the European Communities, which were predecessors of the European Union.Since 1972, a total of 48 referenda have been held by EU member states, candidate states, and their territories, with several additional referendums held in countries outside of the EU.The referendums have been held …