Call for Papers Dossier: “Dilemmas and Challenges of Regulating Digital Platforms in the Context of Political Communication” ECO-Pós – Revista do Programa de Pós-Graduação em Comunicação da UFRJ Volume 29, Issue 2 Many of the dilemmas shaping public debate in contemporary societies are fundamentally communicational in nature and are directly linked to the growing mediatization of everyday life and the digitalization of social, political, and economic interactions. In the context of recurring diagnoses of democratic crises, multiple forms of disinformation, hate speech, political radicalization, and profound transformations in the world of work, a wide range of social, political, and legal actors have been called upon to debate the regulation of contemporary communication systems, characterized by the coexistence of digital and traditional media. The emergence and popularization of digital platforms have produced a new structural transformation of the public sphere, as argued by Jürgen Habermas. As a result, social and political phenomena with direct implications for the foundations of democratic societies have intensified or taken on new and challenging forms, including political polarization, ideological radicalization, and epistemic crises related to the delegitimization of science and democratic institutions. These dynamics are often associated with platform-related structural determinants, such as monetization models, content curation mechanisms, and the limited or absent transparency surrounding digital advertising regimes. This thematic dossier aims to bring together scholarly articles that engage with debates on the regulation of digital media in the field of political communication, while maintaining an open and critical stance toward regulatory approaches as forms of social, economic, and political control. Multidisciplinary contributions are welcome, particularly those addressing (but not limited to) the following topics: – Comparative and transnational approaches to models of digital platform regulation – Legal, ethical, and political dilemmas of regulatory initiatives, with particular attention to civil and political liberties – Critical perspectives on the regulation of digital media – Regulation and the new structural transformations of the public sphere – Challenges to electoral regulation in contexts of expanding online political advertising and media coverage of opinion polls – Media agenda-building and public perceptions of platform regulation – Self-regulation versus state regulation: digital sovereignty, algorithmic transparency, and content moderation – Transparency, removal, and content labeling policies in electoral contexts Submission deadline: *May 15, 2026* Editors: Camilo Aggio (Federal University of Minas Gerais – UFMG) and Eurico Matos (FGV School of Communication, Media and Information) Estimated publication: September/October 2026 No submission or publication fees are required from authors. Further information and submission guidelines are available at: https://revistaecopos.eco.ufrj.br/eco_pos/announcement/view/334 <https://revistaecopos.eco.ufrj.br/eco_pos/announcement/view/334> Contact: eurico.neto@fgv.br or camiloaggio@gmail.com -- *Eurico Matos * Professor da Escola de Comunicação, Mídia e Informação da Fundação Getulio Vargas (FGV Comunicação) | Coordenador do Mestrado Profissional em Comunicação Digital e Cultura de Dados da FGV Comunicação | Pesquisador do Instituto Nacional de Ciência & Tecnologia em Democracia Digital (INCT.DD) cv(lattes) <http://lattes.cnpq.br/6936324574792283>