The Roman Republic had a government structure comprised of several bodies and roles. The Roman Senate was the highest political body made up of patricians, or aristocrats, who had previously held executive office. There was conflict between the patrician ruling class and the majority plebeian commoners. Consuls served as the chief executives and military commanders, though these roles were usually held by patricians. Other roles included tribunes who protected plebeian rights, censors who conducted the census, and praetors who ranked below consuls. Over time, plebeians gained more power and representation through assemblies and officials they could elect.