Nuet joined the Party of the Communists of Catalonia (PCC) in 1986 and served as secretary-general of its youth wing, the Collectives of Young Communists – Communist Youth (CJC-JC). One of his earliest political acts was campaigning against Spain joining NATO in the 1986 referendum. He was a member of Montcada i Reixac Municipal Council from 1991 to 2003 and was deputy mayor from 1991 to 1999. He was a metropolitan councillor for the Metropolitan Area of Barcelona (AMB) from 1992 to 1999.