This article explores how political parties and individual politicians in Sweden communicate strategically in an online environment where the close relationship between news and journalistic institutions no longer can be taken for granted. We define the adoption and adaption of journalistic conventions in political communication as a particular communication style, conceptualized as “parasitic news”. The article presents an analytical framework that explicates the role of parasitic news across five dimensions: ideological transparency/position, alternativeness, news genres, individual vs. collective media practices, and social media affordances. An analysis of three news projects, representing right-wing populist, liberal/conservative, and left-wing/green ideological positions, reveals that parasitic news is a flexible communication style that blurs the boundaries of politics and media in online spaces. Moreover, parasitic news challenges the relevance of established terms such as alternative, hyper-partisan, and fake news, pointing to the need of a renewed conceptual vocabulary in journalism, media and political communication research.