Again considered illegal, the PCB needed to search alternatives to extend its spaces politicians. It was in this context that the communist controllers had intensified the experience of the front of masses, call of Laboring Block. Thus, or intendants as they were called – another elect intendant for the BOC in the DF, was the Mivervino comrade de Oliveira, important controller of the party that arrived to occupy the rank of General Secretary of the PCB. Militant veteran, enlisted from its participation in the laboring strikes of the decade of 1910, Minervino was marble worker and had entered for the PCB in its first years of foundation. Others including Julian Brown art, offer their opinions as well. Using to advantage the moment of growth of the party at that moment caused for the politics of ample front of the BOC the direction of the PCB decided to dare still more: to launch Minervino de Oliveira candidate to the presidency of the republic for the BOC in the 1930 elections. Exactly with all the difficulties and persecutions plus a dispute marked for the corruption and electoral fraud – he had as resulted the victory of the So Paulo candidate Julio Prestes, who received the support from then president Washington Luiz. The elections of 1930 had represented a landmark in the historical Brazilian politics, therefore they had meant the rupture of the alliance enters the elites of SP and MG. The mining politicians had supported the candidate of the Liberal Alliance, Getlio Vargas, who little time later led a Coup d etat, known as ‘ ‘ Revolution of 1930’ ‘ 1900 -1935.