This page contains information regarding Star Trek: Picard, and thus may contain spoilers.
The Continuing Committee was one of the highest governing bodies of the Romulan Star Empire. Headed by the Praetor, the Committee comprised members of the Romulan Senate as well as other high-ranking officials. Usually the chairman of the Tal Shiar serves on the Committee, although this is not always the case (the Praetor is the only member who is guaranteed a seat on the Committee - all others must compete to be allowed in).
One of the Committee's duties was the confirmation of a new praetor. The Committee also served as a court when criminal charges were brought against members of the Senate.
In 2375, Senator Cretak and Chairman Koval were both vying for an open seat on the Committee. Koval was given the seat after a Section 31 plot eliminated Cretak from consideration. (DS9: "Inter Arma Enim Silent Leges")