The party was founded by
Artur Bernardes, former
president of Brazil and member of the Republican Party in
Minas Gerais, which was banned by the
Estado Novo in 1937. The party reformed in 1945, with the new Electoral Code in Brazil, which required parties to operate at the national level only. Having been temporary members of the
Nacional Democratic Union (UDN), the members of the old republican parties in Brazil announced their withdrawal from the UDN on August 14, 1945. The new Republican Party gathered members of the old local Republican parties of São Paulo, Minas Gerais, Maranhão, Pernambuco and Paraná. In the 1945 presidential election, it supported
Eduardo Gomes of the UDN. In the
1945 legislative elections, the party won seven mandates to the
Constituent Assembly, six from Minas Gerais and one from Maranhão. During the government of President
Eurico Gaspar Dutra, it supported Dutra. During the
1950 presidential election, some branches of the party backed UDN candidate Gomes, but the party's wing in Minas Gerais supported the
Social Democratic Party (PSD) candidate,
Cristiano Machado; both were defeated by
Getúlio Vargas. In the legislative elections in that same year, the party won 11 seats, most of them from Minas Gerais. In the
1954 general elections, the party made gains, achieving 19 mandates, mostly from Minas Gerais. In the 1955 presidential election, the party joined with the PSD to support the successful candidacy of
Juscelino Kubitschek. For a while the party joined a coalition with PSD and the
Brazilian Labor Party (PTB), until the coalition was dissolved in 1958, because the Republican Party supported the UDN candidate,
Jânio Quadros, for the
1960 presidential election, instead of the PSD-PTB presidential candidate. The party's Minas Gerais wing, led by Clóvis Salgado, Tristão da Cunha and João Belo, backed Quadros' opponent. The PR was banned by the
Brazilian military dictatorship, through AI-2 (Institutional Act Number Two) on October 27, 1965. == Political positions==