How did consuls share power in the Roman Republic?

In the Roman Republic, the two consuls shared power through the principle of collegiality, which was fundamental to Roman public office. This system was designed to prevent the abuse of authority by ensuring that each consul held equal power and could obstruct or veto the decisions of his colleague.12

Key aspects of how they shared and balanced this power included:

• Annual Terms: Consuls held office for only one year, preventing any individual from consolidating long-term power.23
• Mutual Veto: Because both consuls possessed the same level of imperium (military and executive authority), one could effectively check the other’s actions.21
• Joint Leadership: As the heads of state, they commanded the army, presided over the Senate, and represented the state in foreign affairs, acting as a pair whose names were used to date the year.21
• Legal Representation: Following the reforms of 367 BCE, the law guaranteed that one of the two consuls would be a plebeian, ensuring that both patrician and plebeian nobility shared in the highest office.21