 In 449 BC , the Senate promulgated the Twelve Tables as the centerpiece of the Roman Constitution . In 443 BC , the office of Censor was created , and in 367 BC , Plebeians were allowed to stand for the Consulship . The opening of the Consulship to the Plebeian class implicitly opened both the Censorship as well as the Dictatorship to Plebeians . In 366 BC , in an effort by the Patricians to reassert their influence over the magisterial offices , two new offices were created . While these two offices , the <unk> and the Curule Aedileship , were at first open only to Patricians , within a generation , they were open to Plebeians as well . 
