https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/
https://www.lobbycontrol.de/2021/03/klare-kante-gesetze-verschaerfen/?pk_campaign=20210311&pk_source=nl
https://www.ineteconomics.org/perspectives/blog/the-economics-and-politics-of-social-democracy-a-reconsideration