In discourse-based grammatical theory, information flow is any tracking of referential information by speakers. Information may be new, i.e., just introduced into the conversation; given, i.e., already active in the speakers' consciousness; or old, i.e., no longer active. The various types of activation, and how these are defined, are model-dependent.
Information flow affects grammatical structures such as:
Political communication is the study of political messaging, e.g. in political campaigns, speeches and political advertising, often within the mass media. It is an interdisciplinary subfield located between communication studies and political science. Political communication is concerned with ideas such as information flow, political influence, policy making, news, and public opinion. The field also focuses on the study of political social media, propaganda, political economy of communication and non-profit organisations that communicate to affect political processes. Modern societal changes that have affected the field include the digitization of media, polarization and a movement towards a post-truth media environment.