https://www.nature.com/articles/s41562-021-01056-1
https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/
http://www.pewforum.org/2018/05/29/being-christian-in-western-europe/
https://www.ituc-csi.org/ituc-global-rights-index-2020