The EcoDem fought the election for the Constituent Assembly of the Democratic Party on 14 October 2007 within the Environment, Innovation, Labour list, led by Realacci along with Giovanna Melandri and Luigi Nicolais. The list scored 8.1% at the electionhttp://www.partitodemocratico.it/adon/files/totalegraf.pdf and the EcoDem elected more than 100 delegates to the Assembly. Following this promising result, Realacci and Della Seta were appointed by PD leader Walter Veltroni heads of Communication and Environment departments, respectively.
