He worked in early opposition parties in the 1970s/80s against the Brazilian military dictatorship, and drafted the founding manifesto for the Brazilian Democratic Movement Party (PMDB) in 1980.
1970年代和80年代，他为早期的反对党工作，反对巴西军事独裁，还于1980年起草了巴西民主运动党（the Brazilian Democratic Movement Party，PMDB）的成立宣言。