She left the party on December 4, 2012, after its leader, Gérald Tremblay, resigned from office amid scandal.
[1] When Verdun borough mayor Claude Trudel also resigned from office in the same period, Champoux put forward her name to become his interim successor.
She was defeated by city councillor Ginette Marotte in a four-to-two vote among the remaining borough council members.
[3] During the campaign, Champoux outlined her party's approaches to subjects such as public transit on Nuns' Island and poverty reduction.
The party was dissolved and ceased to be recognized by the Directeur général des élections du Québec on July 17, 2014.