This communication aims to address the brief form in its use on Twitter. The focus is on the publications of political figures and questions what is called “sound bite”, as a brief form and according to its use on a digital sociotechnical device such as Twitter. The purpose of this paper is to show how “sound bite” is used and is usable in the construction of the image of a candidate, and how it participates in the production of link and a relationship between the politics that use it and the citizens who receive it.