Brazilian Social Democracy Party

The Brazilian Social Democracy Party (Portuguese: Partido da Social Democracia Brasileira, PSDB), also known as the Brazilian Social Democratic Party or the Party of Brazilian Social Democracy, is a centre-right political party in Brazil.

Born together as part of the social democratic opposition to the military dictatorship from the late 1970s through the 1980s, and later shifting toward neoliberalism and liberal conservatism in the 1990s. PSDB governed Brazil from 1995 to 2003 with the Presidency of Fernando Henrique Cardoso, and was the runner-up for all presidential elections from 2003 to 2014. The PSDB and the Workers' Party (PT) have since the mid-1990s been the bitterest of rivals in current Brazilian politics—both parties prohibit any kind of coalition or official cooperation with each other at any government levels. As the formerly third largest party in the National Congress, was the main opposition party against the PT administrations of Luiz Inácio Lula da Silva and Dilma Rousseff from 2003 to 2016. While still the fifth in number of members, with 1,291,811 registered, PSDB has lost a lot of space in the political scenario after several losses at the 2018 and 2022 elections, several internal splits, while at the same time the main opposition to PT became the Bolsonarist movement, resulting in the loss of several members and electorate.

The PSDB's mascot is a blue and yellow colored toucan, with party members being called tucanos for this reason. Famous tucanos include Mário Covas, Geraldo Alckmin (now a member of the PSB), Tasso Jereissati, Aécio Neves, former President Fernando Henrique Cardoso, Franco Montoro, Aloysio Nunes, Yeda Crusius, João Doria, and José Serra.