After Brazil aligned itself with the
Allies and the Estado Novo weakened, political prisoners were released. Prestes was freed in May 1945 under an amnesty for political prisoners. After the overthrow of Vargas in October 1945, new elections were held. Prestes commented on Vargas's political flexibility, saying, "Getúlio is very flexible. When it was fashionable to be a fascist, he was a fascist. Now that it is fashionable to be democratic, he will be a democrat." Despite his imprisonment under Vargas and the fate of Olga Benário, Prestes nevertheless supported him in the name of national unity. Prestes then reorganized the Communist Party, which at that time had about 4,000 members. In the elections that followed, the communists received about 700,000 votes, or 15 percent of the total. In the elections of December 2, 1945, Prestes won the largest number of votes in the race for senator from the Federal District. His election coincided with the beginning of the
Cold War. In the same election, Prestes was also elected federal deputy for the Federal District,
Pernambuco, and
Rio Grande do Sul, but he relinquished those seats in order to take his place in the Senate. As a senator, Prestes took part in drafting the 1946 constitution. Soon afterward, however, the Communist Party again came under pressure. In May 1947, the Brazilian government outlawed the party, and Congress subsequently removed its communist members. Prestes then returned to clandestine political activity. During the
1946 Constituent Assembly, Prestes supported amendment no. 3,165, introduced by deputy
Miguel Couto Filho, which sought to prohibit the entry of Japanese immigrants into Brazil. In 2013, the
Federal Senate formally restored Prestes's mandate and annulled the 1948 cassation. Prestes did not support any candidate in the 1950 election and remained a critic of Vargas until Vargas's suicide in 1954. He later supported
Juscelino Kubitschek in 1955 and assumed a more public role, even while the PCB remained illegal. During the presidency of
João Goulart, Prestes and other figures on the left saw the possibility of far-reaching reforms for workers and peasants, while many in the middle class, the military, and conservative sectors viewed the growth of the left with alarm. The military overthrew Goulart in 1964 and established a dictatorship. Under military rule, Prestes again went underground and later into exile as the dictatorship targeted communist activists and leaders. During this period, divisions within the Brazilian communist movement deepened. Prestes led the pro-Soviet faction that remained identified with the Brazilian Communist Party (PCB), while Maoists organized the separate
Communist Party of Brazil (PCdoB). Unlike armed groups on the revolutionary left after 1964, Prestes's faction did not adopt urban guerrilla warfare. == Later life and death ==