The Liberal Democratic Union (Greek: Φιλελεύθερη Δημοκρατική Ένωση, abbr. ΦΙΔΕ) was a coalition of six Greek political parties for the elections of 1956. Its main leader was Sofoklis Venizelos. Members of the coalition were: * Liberal Party * United Democratic Left (EDA) * National Progressive Center Union (EPEK) * People's Party * Democratic Party of Working People * Peasants and Workers Party (KAE)