information:filtering
Relationship with the Senate

Since the fall of the Republic, the authority of the Roman Senate had largely eroded under the quasi-monarchical system of government established by Augustus, known as the Principate. The Principate allowed the existence of a de facto dictatorial regime, while maintaining the formal framework of the Roman Republic. Most Emperors upheld the public facade of democracy, and in return the Senate implicitly acknowledged the Emperor's status as a de facto monarch. Some rulers handled this arrangement with less subtlety than others. Domitian was not so subtle, often coming to the Senate as a triumpher and conqueror to show his disdain for them. From the outset of his reign, he stressed the reality of his autocracy. He disliked aristocrats and had no fear of showing it, withdrawing every decision-making power from the Senate to reduce its control to an administrative one, and instead relying on a small set of friends and equestrians to control the important offices of state.

The dislike was mutual. After Domitian's assassination, the senators of Rome rushed to the Senate house, where they immediately passed a motion condemning his memory to oblivion. Under the rulers of the Nervan-Antonian dynasty, senatorial authors published histories that elaborated on the view of Domitian as a tyrant. Nevertheless, the evidence suggests that Domitian did make concessions toward senatorial opinion. Whereas his father and brother had concentrated consular power largely in the hands of the Flavian family, Domitian admitted a surprisingly large number of provincials and potential opponents to the consulship, allowing them to head the official calendar by opening the year as an ordinary consul. Whether this was a genuine attempt to reconcile with hostile factions in the Senate cannot be ascertained. By offering the consulship to potential opponents, Domitian may have wanted to compromise these senators in the eyes of their supporters. When their conduct proved unsatisfactory, they were almost invariably brought to trial and exiled or executed, and their property was confiscated.

Both Tacitus and Suetonius speak of escalating persecutions toward the end of Domitian's reign, identifying a point of sharp increase around 93, or sometime after the failed revolt of Saturninus in 89. At least twenty senatorial opponents were executed, including Domitia Longina's former husband Lucius Aelius Lamia Plautius Aelianus and three of Domitian's own family members, Titus Flavius Sabinus, Titus Flavius Clemens and Marcus Arrecinus Clemens. Flavius Clemens was a cousin of Domitian, and the emperor had even designated Clemens' two young sons as his successors, calling them as "Vespasian" and "Domitian". Some of these men were executed as early as 83 or 85, however, lending little credit to Tacitus' notion of a "reign of terror" late in Domitian's reign. According to Suetonius, some were convicted for corruption or treason, others on trivial charges, which Domitian justified through his suspicion:

He used to say that the lot of Emperors was most unfortunate, since when they discovered a conspiracy, no one believed them unless they had been murdered.

Jones compares the executions of Domitian to those under Emperor Claudius (41–54), noting that Claudius executed around 35 senators and 300 equestrians, and yet was still deified by the Senate and regarded as one of the good Emperors of history. Domitian was apparently unable to gain support among the aristocracy, despite attempts to appease hostile factions with consular appointments. His autocratic style of government accentuated the Senate's loss of power, while his policy of treating patricians and even family members as equals to all Romans earned him their contempt.