Meetings of the Senate were formal affairs, but unlike modern legislatures the Senate did not stay in session over long periods. Instead, it met in specific venues – they had to be inaugurated – when called by a magistrate with the power to do so.
We may begin with place: the Senate had no single fixed meeting spot, though the curia in the Forum was the most common location, however the place the Senate met had to be religiously prepared via inauguration (the taking of the auspices by the augurs) and by sacrifices in order to make sure the gods approved of the proceedings and its results. Consequently, the Senate always met in a templum in the sense of a consecrated space, but also it tended to meet literally in temples, with meetings in the temples of Jupiter Optimus Maximus, the temple of Fides, the temple of Concord, and so on. Notably, two locations, the temple of Bellona and the temple of Apollo were also used and these sat outside the pomerium, enabling the Senate to meet with magistrates who, because of their active command of an army, could not cross the pomerium; they were also sometimes used to meet with foreign dignitaries the Senate did not wish to let into the city. Later added to this number of sites outside the pomerium was Pompey’s theater, which included a temple of Venus Victrix and a curia as part of the overall complex.
In order to meet, the Senate had to be called or more correctly “driven together” (cogere, often translated adequately as “summoned”, but as Lintott notes, it has an element of compulsion to it) by a magistrate. There were a few standard dates on which this would effectively always happen, particularly the first day of the consular year, but beyond that it was expected that magistrates in Rome could call the Senate at any time to discuss any issue on relatively short notice. There was initially no requirement that Senators live in the city of Rome, but it was clearly assumed. Early on in the second century, we get regulations requiring Senators to stay close to Rome unless they had an official reason to be elsewhere, though Senators might be permitted to leave if they needed to fulfill a vow. In the Late Republic it seems to have been common also for Senators to leave the city during the spring res prolatae, a sort of recess from public business (literally “the deferring of business”), but these informal breaks did not mean the Senate was truly “out of session” and it could still be summoned by a magistrate.
Generally, meetings of the Senate began at dawn, though they could begin later, and they proceeded either until the business was concluded or to dusk. Because of the ritual preparations required, no meeting of the Senate could last more than a day, much like the assemblies, so if the business was not finished, a new meeting would need to be called and the process begun from scratch. While it seems that magistrates generally tried to avoid calling the Senate during festival days, dies nefandi (days unsuited for public business) and meetings of the popular assemblies, there was no requirement to do so and the Senate might be called for any day for most of the Republic, with laws restricting the Senate’s meeting days only coming midway through the first century.
Beyond this, Senators were expected to show up and we hear of threats of fines or other censure for failure to show up, but it also seems like no meeting of the senate was ever very close to the full body and quorums for the Senate were fairly low, 100 or 150. For the Sullan Senate, notionally of 600 members, the highest attendances we know of, as noted by Lintott, are 415, 417 and 392. Of course some significant number of Senators will, at any time, have been active magistrates overseas, or serving as military tribunes, or as senatorial legati, but it seems clear that even beyond this attendance was not universal even if it was in theory supposed to be.
Bret Devereaux, “Collections: How to Roman Republic 101, Part IV: The Senate”, A Collection of Unmitigated Pedantry, 2023-09-22.
July 30, 2025
QotD: Meetings of the Roman Republican Senate
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