- In some ways constitution resembled a Greek politeia
- Had an assembly, in which all citizens voted
- Had a council called senate which advising magistrates
- Had magistrates who led army, proposed legislation, judged legal cases
- Political system was more aristocratic and hierarchical than Athens
- Social relations were dominated by system called patronage or clientela
- People of unequal rank were bound by ties of loyalty and gratitude
- Ancient accounts contained struggle between patricians and plebeians
- Plebeians forced patricians to publish legal code called Twelve Tables