This chapter offers some preliminary results of an ongoing research on Hungarian administrative personnel during the interwar period. The present study addresses the particular crisis period following the fall of the Austro-Hungarian Monarchy (1918-1920) during which a monarchy, a democratic republic, a soviet republic and a counter-revolutionary government followed each other, as emerged a conservative regime – the Horthy regime. It aims to investigate the modalities of the great transformation that reshaped both the administrative structures and their personnel, and to tackle the issue of the failure of democratization of public administration. The ministry (Commissariat) of the Interior, who was in charge of the state personnel, is particularly scrutinized.