The parliament also keeps the three governments informed about the opinions that move in the parliamentary assemblies from which its members originate.

[2] After some years of discussions about the extension of the competences of the Benelux Parliament, a new agreement was signed on 20 January 2015.

The Christian faction includes members of the CD&V, the CSP and the N-VA from Belgium, the CDA, the CU and the NSC from the Netherlands, and the CSV and the ADR from Luxembourg.

The socialist/green SGD/SVD faction (Dutch: Socialisten, Groenen en Democraten, French: Socialistes, Verts et Démocrates)[4] includes members of the PS and Ecolo-Groen from Belgium, GroenLinks, the PvdA, and the SP from the Netherlands, and The Greens and the LSAP from Luxembourg.

The liberal faction includes members of the VLD and the MR from Belgium, the VVD and the D66 from the Netherlands, and the DP from Luxembourg.