Tumasjan, Andranik, Timm Sprenger, Philipp Sandner, and Isabell Welpe. 2010. “Predicting Elections With Twitter: What 140 Characters Reveal about Political Sentiment”. Proceedings of the International AAAI Conference on Web and Social Media 4 (1):178-85. https://doi.org/10.1609/icwsm.v4i1.14009.