The author explores the political activity of M. Licinius Crassus in the 70s BC. Scarce and dispersed evidence of the sources shows that he had political contacts with three plebeian tribunes: Cn. Sicinius (76 BC), L. Quinctius (74 BC) and Licinius Marcus (73 BC). All the three campaigned for the restoration of the tribunes’ rights restricted by Sulla, and thus created a basis for the reform of the office carried out by Pompeius and Crassus during their consulate of 70 BC.