- Source: List of senators of Beni
Beni is represented in the Plurinational Legislative Assembly by four senators and their substitutes elected through proportional representation. They serve five-year terms and qualify for reelection indefinitely. The current delegation comprises two senators from Civic Community (CC), one from the Movement for Socialism (MAS-IPSP), and one from Creemos: Cecilia Moyoviri, Walter Justiniano, Suka Nacif, and Claudia Égüez. Their respective substitutes are: Fernando Vaca, Neila Velarde, Misdrael Mamani, and Javier Villavicencio. Although the bicameral system was adopted in the 1831 Constitution and was maintained in subsequently promulgated constitutions, it can be affirmed that with the exception of very small intervals, the Senate did not, in fact, exercise its functions until the convocation of the 1882 legislature. Furthermore, due to heavy political instability and frequent military interventions since 1882, Bolivia did not experience a continuous, uninterrupted legislative session until 1982.