Add to ORKGInternational audienceThis paper is a review of studies on on-line political discussions. Originally these studies were strongly influenced by the deliberative issue, but the academic literature now stresses the socio-technical devices used and the objectives of these discussions. Even though on-line political discussions can lead to the homogenization of opinions, they are also open to diverse opinions and to a wide range of discursive resources. The need for further research on citizens' motives for taking part in on-line discussions, as well as the effects of these discussions on political engagement and public decisionmaking, is also underlined.Influencées au départ par la problématique de la délibération, les recherches sur les discuss...