Конвергенция и Союз
On 19 September 1978, CDC and UDC established the Convergence and Union (CiU) alliance, under which both parties would contest together all elections held in Catalonia throughout the next 37 years together. From the 1979 Spanish general election onwards, CDC and UDC would maintain the CiU alliance for all elections at all levels of administration: local, regional and general.