I examine the transformation of Italy during the fascist era and the way in which it was explained by one of the most prominent constitutional lawyers of the time, Costantino Mortati (1891–1985). A member of the Constituent Assembly of 1946–1948 and later a constitutional judge, Mortati had a deep influence on the Italian post-War constitutional thinking. Here I focus on Mortati’s understanding of the state’s transformation after 1922. I show how he conceptualised Italy’s transition from a liberal state to an authoritarian regime as a shift from the parliament to the executive of the power of ‘political direction’, ie, the power of identification of the aims and values of the state. Mortati did not envisage in the Italian transformation the full erasure of the separation of powers, but rather a large reshuffle of political direction moving from the Parliament to the Head of Government, allegedly a process in line with the country’s needs in the 20th century. He read the growth of executive powers as the most enduring constitutional transformation of his time, one destined in his mind to persist even after the downfall of the regime.