In 1979 PCU was banned from participating in the general elections because it was considered and "anti-constitutional" candidacy. This led the organizations that formed the coalition to create a new movement: Canarian People's Union (UPC). UPC was joined by the Party of Communist Unification in the Canaries (PUCC), Socialist Party of the Canaries, Canarian Assembly and
Canarian Nationalist Autonomous Confederation. A sector of PCU that was critical with the political direction of the coalition, which they considered that was moderating towards autonomist positions, left the PCC(p) and CC and formed a movement called Radicales de Base de PCU, that finally also joined UPC.[2]