Through this survey, we have led to a small answer to our question, which seems at first descriptive, to know who the actors of Nuit debout are. The aim of this thesis was to understand what type of person was involved in Nuit debout and how they became involved. The first thing to note is that for the majority of the individuals interviewed the commitment to Nuit debout was short (a few months) and intense (it required permanent involvement in the place). The majority of the respondents expected something from this movement, each in their own way (a revolution, a network, a democracy workshop) and it is in this, because they thought it would grow, that they became involved. Unfortunately, after several months in the square, they all found it difficult to establish their political dreams. In most of the interviews, we notice that the individuals have difficulties to speak about Nuit debout as a "we" but mostly as a "them and me".