The first cohort of 25 senators was sworn in at the National Assembly headquarters in Porto-Novo during a ceremony led by Élisabeth Pognon, the second oldest senator present. The opening session followed a formal protocol, including an inaugural address and an official group photograph, before senators proceeded to closed-door deliberations. In her remarks, Pognon emphasized that the Senate’s creation stems from the constitutional amendment adopted on December 17, 2025, and highlighted its role in bolstering institutional trust and political stability.

The Senate’s mandate differs from that of the Constitutional Court, which rules on legal matters. Under Article 113.1 of the Constitution, the new chamber is responsible for safeguarding national unity, strengthening state institutions, and upholding democracy, peace, and political harmony. It also holds authority to impose sanctions on public figures, including restrictions on political or civic rights, under conditions specified by the Constitution.

Additionally, the Senate must provide a non-objection opinion before the enactment of constitutional amendments, electoral laws, and regulations governing political parties and their operations. This authority positions the chamber as a key player in shaping foundational legislation. The first term comprises 25 senators, as mandated by the Constitution, including ex-officio members and appointees such as former public officials and retired defense and security personnel. With this inauguration, Benin now operates under a two-chamber Parliament for the first time since the 1990 Constitution took effect.