
https://yougov.co.uk/news/2017/04/26/voting-intention-conservatives-45-labour-29-25-26-/

https://www.strategie.gouv.fr/sites/strategie.gouv.fr/files/atoms/files/fs-2023-na125-force-du-destin-septembre_1.pdf

https://www.esri.ie/system/files/publications/SUSTAT128_2.pdf