The composition and powers of the Senate are established in Third Title, Chapter 1 in the First Section of the Dominican Constitution.

Each province, and the Distrito Nacional, regardless of population, is represented by one senator who serves for a four-year term, with possibility of reelection.

The Senate Chamber is located in the west wing of the Congress Palace, in Santo Domingo.

Due to its smaller size and statewide constituencies, the Senate has historically had a more collegial and less partisan atmosphere.

In consequence: The members of the Senate in Dominican Republic are elected by the D'Hondt method in relationship with the deputies.