トリブス民会
The organization of the Tribal Assembly was much simpler than was that of the Centuriate Assembly, in contrast, since its organization was based on only thirty-five Tribes. The Tribes were not ethnic or kinship groups, but rather geographical divisions (similar to modern U.S. Congressional districts or Commonwealth Parliamentary constituencies). The president of the Tribal Assembly was usually a Consul, and under his presidency, the assembly elected Quaestors, Curule Aediles, and Military Tribunes. While it had the power to pass ordinary laws ("leges"), it rarely did so. The assembly known as the Plebeian Council was identical to the Tribal Assembly with one key exception: only plebeians (the commoners) had the power to vote before it. Members of the aristocratic patrician class were excluded from this assembly. In contrast, both classes were entitled to a vote in the Tribal Assembly. Under the presidency of a Plebeian Tribune (the chief representative of the people), the Plebeian Council elected Plebeian Tribunes and Plebeian Aediles (the Plebeian Tribune's assistant), enacted laws called plebiscites, and presided over judicial cases involving Plebeians. Originally, laws passed by the Plebeian Council only applied to Plebeians. However, by 287 BC, laws passed by the Plebeian Council had acquired the full force of law, and from that point on, most legislation came from the council.