This dataset contains ~11M tweets related to the 2019 United Kingdom General Election, published and collected between November 12, 2019, and December 12, 2019. In addition, we provide nodes and edges of the superspreader user similarity network, as described in the paper below. Please, refer to the paper below for more details. Nizzoli, L., Tardelli, S., Avvenuti, M., Cresci, S., & Tesconi, M. (2021). Coordinated Behavior on Social Media in 2019 UK General Election. In 15th International Conference on Web and Social Media. AAAI. In detail, the dataset consists of: tweet-ids.csv.zip: a CSV file with the column "tweet_id," containing 11,264,820 tweet IDs related to the 2019 United Kingdom General Election, published and collected between November 12, 2019, and December 12, 2019. superspreader-nodes.csv.zip: a CSV file with the columns "id" and "cluster," relating to the nodes of the superspreader user similarity network mentioned in the paper. superspreader-edges.csv.zip: a CSV file with the columns "source," "target," and "weight," relating to the edges of the superspreader user similarity network mentioned in the paper.