1. Boller PF (2004) Presidential campaigns. From George Washington to George W. Bush. Oxford University Press, Oxford
2. Gallup historical trends: party affiliation. Gallup news. https://news.gallup.com/poll/15370/party-affiliation.aspx. Accessed Oct 15 2020
3. Ehrenfreud M, Tankersley J (2016) Seven things to know about Hillary Clinton and Donald Trump before you vote. Washington post, Nov 7 2016
4. Eisenstein J (2019) Introduction to natural language processing. The MIT Press, Cambridge
5. Savoy J (2020) Machine learning methods for stylometry. Springer, Cham