Union of the Democratic Centre (Spain) Tags: Political Party.The Union of the Democratic Centre (Spanish: Unión de Centro Democrático UCD also translated as Democratic Centre Union) was an electoral coalition and later political party in Spain existing from 1977 to 1983. It was initially led by Adolfo Suárez. thumbnail colour Green, Orange (colour) 色名 Orange Green country Spain european affiliation European Democrat Union extinction year 1983-01-01T00:00:00+02:00 formation year 1977-01-01T00:00:00+02:00 ideology Constitutional monarchy, Christian democracy, Reformism, Liberalism, Social democracy president Adolfo Suárez Learn more... Loading...