Committees of inquiry in the Austrian National Council gained a significant upgrade through a reform in 2015: for the first time, a parliamentary minority can now demand the establishment of a committee of inquiry. This reform meant not only a strengthening of control rights, but also an increase in parliamentary investigations in Austria. The aim of this article is to shed light on the parliamentary perspective and to deepen the understanding of investigative committees. In this way, it is to be shown which potentials, but also weaknesses, can be found in the investigative instrument from the MPs’ point of view. A first-time survey of members of committees of inquiry showed that the perceptions of the reform and the democratic benefits differed greatly between the governing party ÖVP and the opposition party SPÖ. The increasing polarisation of the political debate also led to a further divergence in the approval or rejection of the investigative instrument. These developments may not only result in a weakening of the investigative instrument, but also directly challenge parliamentary democracy.