Latest / The Story of Italy: Rome, Renaissance, and the Birth of Modern Europe — Fexingo History / The Year Without a Consul: Rome's Interregnum Crisis
Transcript
- Lucas: So we've talked a lot about Rome's officials — the consuls, praetors, aediles, all the rungs of the cursus honorum. But there's one office we haven't touched yet that's almost a ghost in the system: the interrex. Luna: Interrex — literally 'between king'? Lucas: Exactly. It goes back to the earliest days of Rome, after Romulus supposedly disappeared. The senate couldn't agree on a new king, so they handed power to a rotating series of patricians, each serving for five days, until a king could be chosen. The office persisted even under the Republic, but only in one very specific scenario: when the year's consuls died or resigned before their successors had been elected. Luna: So it's like a constitutional emergency brake. Lucas: Precisely. Normally, elections happened well before the consuls' term ended. But if there was a gap — say, both consuls died in battle or were forced out — then the senate would appoint an interrex from among the patrician senators. That interrex held power for five days, then had to name a successor interrex, and so on, until new consuls could be elected. The system was designed to prevent a power vacuum from turning into a monarchy or a tyranny. Luna: But it must have been a recipe for political paralysis. Lucas: In the early Republic it worked smoothly enough. But by the late Republic, it became a weapon. The most famous interregnum — or rather series of interregna — happened in 55 BCE. That year, the political deadlock was so severe that Rome went months without consuls. And the man at the center of the deadlock was Cato the Younger. Luna: Cato — the champion of the optimates, the die-hard traditionalist. Lucas: The very same. Now, 55 BCE was a tense year. Pompey and Crassus, who had been allies with Caesar in the so-called First Triumvirate, wanted to be consuls together. But the optimates in the senate — led by Cato — were dead set against it. They saw Pompey and Crassus as threats to the Republic, and they used every procedural trick to block their election. One key tactic was religious obstruction: the tribunes would claim that the omens were unfavorable, and elections would be postponed. Luna: And Cato was famous for filibustering too, wasn't he? Lucas: Absolutely. There's a story that when the senate was debating some law he opposed, Cato just kept talking until sunset, forcing the session to adjourn without a vote. But in 55 BCE, the obstruction went further. The consuls from the previous year — 56 BCE — were Gnaeus Cornelius Lentulus Marcellinus and Lucius Marcius Philippus. They managed to delay the elections until the end of their term, and then no one could agree on successors. So Rome entered the new year with no consuls at all. Luna: So the interregnum kicked in. Lucas: Correct. The senate appointed an interrex — a patrician named Lucius Lucretius Tricipitinus, I believe — who served for five days. But he couldn't hold elections either, because the tribunes kept vetoing the attempt, or the augurs declared the omens bad. So after his five days, he appointed another interrex, and another, a whole chain of them. We don't have the full list, but ancient sources say the interregnum stretched on for months. Luna: And the city just ran? Without consuls? Lucas: Other magistrates were still in place — praetors handled the courts, aediles managed public works, tribunes could propose legislation — but no one could command an army or convene the centuriate assembly for elections. It was a kind of bureaucratic stasis. Meanwhile, politics didn't stop. Pompey and Crassus were using their influence and their supporters to pressure for elections. Cato and his allies were equally determined to stop them. The deadlock dragged on. Luna: It sounds like a perfect example of the Republic's institutional failure. Lucas: It was. And it points to a deeper problem: the interregnum was a relic from a time when Rome was a small city-state with a unified patrician elite. By the late Republic, the elite was bitterly divided, and the mechanism was being exploited for partisan advantage. In the end, the deadlock was broken only when Pompey and Crassus essentially bribed or threatened their way into office. They got a tribune — I think it was Gaius Trebonius — to pass a law, the Lex Trebonia, that granted them special provinces and commands. Then, in early 55 BCE, elections were finally held, and Pompey and Crassus became consuls — but the fix was in. Luna: So the interregnum bought time, but it didn't solve the fundamental conflict. Lucas: Exactly. And here's something I find fascinating: the interregnum itself had complex rules. For instance, the first interrex had to be chosen by the full senate, but subsequent interreges could be appointed by the current interrex without a formal vote. Also, during an interregnum, the consular power was technically held by all interreges successively, but they couldn't do anything major — no treaties, no war declarations, no legislation. They were literally caretakers. Luna: Did this ever happen again after 55? Lucas: Yes, but less frequently. There was another interregnum in 52 BCE after the murder of Clodius and the burning of the senate house — that one ended with Pompey being appointed sole consul, which was even more extraordinary. And then during the civil wars, the system just collapsed. The last known interregnum was around 44 or 43 BCE, I think, just before Octavian came to power. After that, the emperor's authority made it obsolete. Luna: So the interregnum is a kind of fossil — a leftover from the monarchy that became a political tool. Lucas: Exactly. And it's a great lens for seeing how the Republic's supposed safeguards could be twisted. The interregnum was meant to prevent a vacuum, but in the late Republic, it actually prolonged the vacuum because no faction would concede. It's a small mechanism, but it tells a big story about why the Republic fell. Luna: Speaking of mechanisms that tell big stories — I've always loved how this show digs into those specific, almost forgotten pieces of the past. Lucas: That's the whole idea. And you know, it's exactly because we can spend time on things like the interregnum that we keep this show ad-free. We deliberately don't run ads on these episodes, because we want to be able to follow whatever thread catches our interest without worrying about sponsors or selling something. Luna: And for listeners who appreciate that — who want to support that freedom — we keep it simple. There's a link at buy me a coffee dot com slash fexingo. Just a way to chip in if you find value in these deep dives. Lucas: Yeah, no pressure, no perks, no membership tiers. It's just a way to keep the show exactly what it is. And it makes a real difference. Luna: Alright — back to the interregnum. You mentioned the augurs and religious obstruction. Can we talk about how religion was used in that deadlock? Lucas: Sure. The augurs were a college of priests who interpreted the will of the gods by watching the flight of birds, the behavior of sacred chickens, things like that. In the late Republic, they were sometimes used to cancel assemblies by claiming unfavorable omens. During the interregnum of 55 BCE, the tribunes who opposed Pompey and Crassus would announce that they were watching the sky — 'servare de caelo' — which automatically suspended any election or assembly. It was a veto wrapped in piety. Luna: So religion became a procedural weapon. Lucas: Exactly. And the optimates, Cato included, were masters of it. Cato himself was not an augur, but he was deeply religious in a political sense. He saw the old traditions as essential to the Republic's health. But here's the irony: by using religious obstruction to block the will of the people, he was contributing to the very breakdown he wanted to prevent. The interregnum dragged on, public frustration grew, and eventually the stronger force won anyway. Luna: It's like the cure was worse than the disease. Lucas: In many ways, yes. And it's a pattern that repeats throughout the late Republic: the optimates using the traditional constitution to block popular demands, and the populares using other means — bribery, violence, tribunician laws — to circumvent them. The interregnum is just one example, but it's a perfect illustration of how the system stopped working when consensus broke down. Luna: You mentioned the Lex Trebonia earlier — was that the law that gave Pompey and Crassus their provinces? Lucas: Yes. Once they finally got elected as consuls, they immediately pushed through a law that gave Pompey the provinces of Spain and Africa — though he governed them through legates — and Crassus the province of Syria, which he wanted for a war against Parthia. That law was passed by a tribune, Gaius Trebonius, despite optimate opposition. So the interregnum ended, but the concessions that ended it further undermined the Republic. Luna: And Crassus's Syrian command led straight to Carrhae the next year. Lucas: Exactly — the disastrous battle where Crassus was killed and the Roman standards were lost. So the interregnum of 55 BCE wasn't just a procedural hiccup; it set in motion events that would shape the next decade. And it's a reminder that the Republic's fall wasn't a single dramatic event — it was a series of small failures, each one making the next more likely. Luna: I feel like I'll never look at a five-day caretaker government the same way again. Lucas: That's the spirit. The interregnum is one of those forgotten corners of Roman history, but it tells us so much about how the Romans thought about power, legitimacy, and crisis. And it's a warning, centuries later, about how fragile constitutional systems can be when those who operate them lose trust in one another.