EU referendum data 1972-2018

This is the primary data set to a wide-range study of European referendums from 1972 to 2018. Data to 28 EU member states are provided. These include the turnover and YES/in-favor results. Moreover, the referendums are classified according to four distinct types, i.e. sovereignty, EU matters, constitutional and policy issues. The novel concept of "spheres" is also introduced. It includes five elements or concentric spheres, i.e. private, family, society, state and institutional. Where available, data are backed by official sources. This data set is the prelude to a journal paper to be announced in late 2019.