How does an essay change when it appears in a newspaper, aimed at a mass reading public that includes people of varied class backgrounds? This chapter takes up how periodical publication shaped nineteenth-century essays, looking at the effects of serialisation, republication through excerpting, and the intertextual nature of Victorian journals and papers. It explores how the political journalism and social protest movements of the 1830s and 1840s influenced the essay, in contrast to the notion that political campaigning is opposed to the contemplative and reflective values associated with the genre. Focusing on Thomas Carlyle’s response to the social movements of his time, the chapter argues that not only did Carlyle engage ideologically with popular protest but that the writing he encountered in the radical press shaped his style by encouraging an oratorical mode, melodramatic language and rhetorical excesses.