The aim of this research is to explore a little-studied topic, namely the role of legislative advisors in their institutional and political functions. To this end, the work focused on the offices of the senators who made up the Frente Para la Victoria - PJ bloc of the Argentinean Senate. In-depth interviews were carried out with the chief advisors, heads of offices and/or advisors of each of the nine senators who make up the bloc. From these interviews it was possible to carry out an analysis of their role, tasks and functions.A study of the scarce bibliography on the subject was also carried out, which highlights a perspective in which the legislative advisor is ideally seen as a politically neutral technician or criticised for a supposed lack of professional preparation for the function he or she is supposed to perform. As a result of this research, it has been possible to question these ideas.