摘要:The regional elections in Catalonia held on 21 December 2017 received wide media coverage, far beyond Spanish media, due to separatist tension in that territory and was one of the main topics in most of the world’s media. Within this process social networks, especially Twitter, obtained crucial relevance given the interest aroused by the political leaders’ publications, since in those elections the debate transcended the usual ideological divisions of right and left and became a struggle between constitutionalists and separatists. This paper analyses the presence and influence of the main candidates of the Catalan political parties on Twitter. To achieve this, a mainly quantitative, mixed methodology based on big data was carried out where all the tweets issued by the candidates during the electoral campaign were analysed.