This article aims to understand how the Portuguese political parties with parliamentary seat use the social network Facebook as a tool for public relations, hoping to verify what it might mean in the communication strategy of each party. To understand the main objective of this research, we will present theoretical bases related to the social network Facebook, political communication and political communication in social networks, which will support the subsequent methodological analysis. The survey was based on all Facebook publications of the nine parties during the official campaign period before the 2019 Legislative Elections, (between the September 22nd and the October 4th). For this, tables were elaborated that include all publications and data related to those publications. Based on this, techniques such as observation, bibliographic research and content analysis were used.
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