Venizelism (Greek: Βενιζελισμός) was one of the major political movements in Greece from the 1900s until the mid-1970s.
Named after Eleftherios Venizelos, the key characteristics of Venizelism were:
Venizelos' liberal party ruled Greece from 1910 until 1916. That year, determined to enter World War I on the entente side, Venizelos rebelled against the king and formed a provisional government in the north. He regained full control of the country and ruled until losing the 1920 elections.
After a crisis period (including two short-lived pro-Venizelist military governments after Nikolaos Plastiras 1923 coup) the liberals returned to power from 1928 until 1932. Venizelists Sophoklis Venizelos and George Papandreou formed the core of the Greek government in exile during the Axis Occupation of Greece (1941–1944), and held power a number of times in the 1950s.
Georgios Papandreou created the Center Union party in 1961, as a coalition of Venizelists and progressive conservatives. In 1963 the party was elected and held power until 1965, when its right wing broke ranks in the events known as the Apostasia.
After the 1967–1974 Junta, Venizelists formed the Center Union-New Forces party, which then evolved into the Union of the Democratic Centre (Greek: ΕΔΗΚ). While the Venizelist legacy was still popular, election results were disappointing as the abolition of the monarchy, the dilution of support for Greek nationalism after the seven years of the junta and the 1974 Turkish invasion of Cyprus, and Karamanlis' move towards the political center had blurred the differences between the liberals and their former conservative opponents, while the socialist PASOK party was gaining support at the left side of the spectrum.