Each senator has a permanent seat in the hemicycle, among the other members of his political group.

Traditionally, the left-wing parties sit on the left and the right-wing parties on the right, starting with the largest party. However, this system has come under pressure in recent legislative periods.

Although the Senate has only 60 members, there are 102 seats.

• The repartition of seats
• The composition of the Senate in French - in Dutch