The Coalition of the Left, of Movements and Ecology[3][7] (Greek: Συνασπισμός της Αριστεράς των Κινημάτων και της Οικολογίας, Synaspismós tīs Aristerás tōn Kinīmátōn kai tīs Oikologías), commonly known as Synaspismos (Greek: Συνασπισμός, Synaspismós, "Coalition") and abbreviated to SYN (ΣΥΝ), was a Greek political party of the radical New Left.

At the legislative elections of 1993, SYN failed by 2,000 votes to pass the limit of 3% and enter the National Parliament.

AEKA was first split and little later disbanded in some months, when the head of the party became an Undersecretary in the socialdemocratic administration of Kostas Simitis.

The Tsipras candidacy was received well, especially so by younger voters, and formed the party's springboard for its good 2007 parliamentary elections showing.

On 10 February 2008 Alexis Tsipras was elected party president, replacing Alavanos, who stepped down citing private reasons.

The party's culture has been enriched by its active participation in the movement against the Neoliberal Capitalist Globalization."

Therefore, SYN members were encouraged to form, or participate in, intra-party platforms on the basis of kinship in ideology.

Platforms mounted open discussions and published magazines, but might not work against party consensus decisions.

The role of the platforms was vital especially in congresses, because each of them proposed a thesis on party strategy and presented its own ballot of candidates for the National Committee.