Deputy to the
Constituent Assembly, he was also undersecretary for foreign affairs in the Parri government and in the first De Gasperi government . In August 1945, as Undersecretary for Foreign Affairs, he confided to the Soviet ambassador that his party considered "Italian demands on Trieste" unacceptable and that "the Communists would not have tolerated such behavior by the Italian delegation at the Peace Conference". Subsequently, from 17 December 1946 to May 1948, he was
mayor of Turin, the first democratically elected in republican Italy. In 1948 he became a member by right of the new
Senate, under the 3rd final provision of the
Constitution, by virtue of having been imprisoned for more than 5 years by the
Special Fascist Tribunal for the Defense of the State. He kept his seat after the
1953 election, and was then elected
deputy in
1958. A member of the leadership of the PCI, he was Secretary of the party’s Turin federation in the years when the automation of the plants was changing the internal organization of the factories and, above all, of Fiat. He ably faced the attack led by
Vittorio Valletta, that sought to use these changes to dismantle the workers' post-war gains. The defeat of the
CGIL in the elections for the Internal Commissions of Fiat prompted changes in the governing bodies of the party. Negarville left Turin and assumed the Italian leadership of the Peace Movement, a role that also led him to take on important international initiatives. ==Later years==