He joined the Socialist Party in 1977 after a meeting with Michel Rocard.[1][2]
In 1979, he was elected mayor of Pompignan;[3] in 1986, regional councilor of Languedoc-Roussillon,[4] and in 1988, general councilor of the canton of Saint-Hippolyte-du-Fort.[5]
After having chaired the socialist group, under the presidency of Alain Journet, within the general council of Gard from 1998 to 2001, he was elected president in 2001.[5]
In 2004, he was elected first vice-president of the Regional Council. After the regional elections of 2004, he resigned because of multiple mandates.[8]
On 23 February 2010 he was excluded from the Socialist Party following his rallying to the list led by Georges Frêche against that of the PS.[9]
On 28 October 2010, after the death of Georges Frêche, the group of socialists excluded and related to the Regional Council elects its candidate for the presidency of the Languedoc-Roussillon region. Damien Alary lost against Christian Bourquin by 13 votes against 18 in secret ballots.[10] The following 10 November, Christian Bourquin was elected president of the regional council, and Robert Navarro replaced Damien Alary from the post of first vice-president he had held since 2004.[9] Damien Alary then asked for his reinstatement in the PS, which he then obtained.[9]
Suffering from cancer in the vocal cords, which he revealed himself in 2011, Damien Alary retained all of his elected functions and mandates. In January 2012, he affirmed “[to be] still good for the service” and “intact in [his] commitment”.[11]
After the death of Christian Bourquin, on 26 August 2014, Damien Alary announced his candidacy for the presidency of the Regional Council of Languedoc-Roussillon.[14][15] He was elected by the regional council on 29 September.[10]
Coming from a family of Pompignan wine growers,[1] he owned a vineyard and olive grove.[21] He is married and has a son, Yannick, born in 1976, who became a notary in Alès.