Résumé
Like surveys, Twitter is a new means of observing public opinion, and even apredictor of election results according to some authors, but the messages posted on thenetwork are often not associated with the socioeconomic characteristics of their authors.Researchers are therefore limited to studying the network’s opinion as a whole, withoutseparating the various social subgroups involved in the debate (students and professionals, leftwing and right-wing activists, etc.). In order to overcome this limitation, we created a panel of1,228 political twitterers whose socio-demographic characteristics we identified through aquestionnaire. The analysis reveals that the number of political tweets posted by the panel isstrongly determined by the sociological and political makeup (age, profession, level of interestin politics) of twitterers, but also by the degree of politicization of the news.