Ab urbe condita
Titus Livius (Livy)
Livy. History of Rome, Volumes 1-2. Roberts, Canon, Rev, translator. London, New York: J. M. Dent and Sons; E. P. Dutton and Co., 1912.
For they passed a decree that when the people had chosen a king, his election would only be valid after the senate had ratified it by their authority. The same procedure exists to-day in the passing of laws and the election of magistrates, but the power of rejection has been withdrawn; the senate give their ratification before the people proceed to vote, whilst the result of the election is still uncertain.
At that time the “interrex” convened the assembly and addressed it as follows: “Quirites! elect your king, and may heaven's blessing rest on your labours! If you elect one who shall be counted worthy to follow Romulus, the senate will ratify your choice.”
So gratified were the people at the proposal that, not to appear behindhand in generosity, they passed a resolution that it should be left to the senate to decree who should reign in Rome.