https://yougov.co.uk/topics/politics/articles-reports/2020/12/02/yougov-democracy-study
https://www.instituteforgovernment.org.uk/printpdf/10590
https://verfassungsblog.de/game-of-chicken/
https://www.cambridge.org/core/journals/government-and-opposition/article/partybased-sovereignism-in-eu-countries-main-patterns-and-their-justification/D0B84A3AEF9D4045BF4824B9353FEEAD