A new democratic constitution was adopted on September 18, 1946, thus beginning the Fourth Brazilian Republic.

Strikes, which were banned, began to re-emerge thanks to war-related inflation, and even Minister of Foreign Affairs Oswaldo Aranha was in favor of a democratic shift.

[4][vague] In 1945, Vargas received support from the newly established Brazilian Labour Party as well as segments of the left.

[5] Vargas added the Additional Act to the constitution, which, among other things, provided for a 90-day period during which a time and date for elections would be designated.

[6] The military feared that Vargas was about to seize absolute power (after a detrimental move on 25 October 1945, removing João Alberto from chief of police of the Federal District and replacing him with Vargas's brother Benjamin), so they forced his resignation and deposed him on 29 October, ending his first presidency.