Thanks to his super partes position, the respect of all DC's internal factions, alongside the undoubted consideration gained also from the other political forces during the works of the Constituent Assembly, in 1950, Leone assumed the position of Vice President of the Chamber of Deputies and then, from May 1955, the one of President, which he held continuously until June 1963.

As president, he demonstrated, in addition to a strong sense of the institutions and a scrupulous respect for the rules of democratic confrontation, a remarkable ability to govern parliamentary dynamics, also mastered through that undeniable presence of spirit, contributed in making him a well-known figure in the public opinion.
At the same time, he was able to gain approval for his action both within the party, which found him a reliable manager of parliamentary processes, and outside DC, among the majority's parties but also in the oppositions, which appreciated his qualities of institutional balance.
Thanks to his super partes position, the respect of all DC's internal factions, alongside the undoubted consideration gained also from the other political forces during the works of the Constituent Assembly, in 1950, Leone assumed the position of Vice President of the Chamber of Deputies and then, from May 1955, the one of President, which he held continuously until June 1963.
As president, he demonstrated, in addition to a strong sense of the institutions and a scrupulous respect for the rules of democratic confrontation, a remarkable ability to govern parliamentary dynamics, also mastered through that undeniable presence of spirit, contributed in making him a well-known figure in the public opinion. At the same time, he was able to gain approval for his action both within the party, which found him a reliable manager of parliamentary processes, and outside DC, among the majority's parties but also in the oppositions, which appreciated his qualities of institutional balance.
Giovanni Leone