https://yougov.co.uk/topics/politics/articles-reports/2020/12/02/yougov-democracy-study
https://ecipe.org/wp-content/uploads/2023/10/ECI_23_OccasionalPaper_04-2023_LY06.pdf
https://www.infodata.ilsole24ore.com/2022/08/21/elezioni-politiche-2022-programmi-confronto-scopri-le-parole-piu-ripetute-aggiornato-al-2008/