He ran 16th in the United Left of the Community of Madrid–The Greens (IUCM–LV) list for the 2011 Madrilenian regional election.[4] As the candidature only. Retrieved 13 seats, he was not elected then a member of the regional legislature.
A member of the Communist Party of Spain (PCE),[5] Sánchez, who had worked at the Assembly of Madrid as technician and as associate researcher for the UCM's Department of Applied Economy, was elected the Coordinator of United Left of the Community of Madrid (IU–CM) in December 2012.[1][3] He handed in his resignation as Coordinator of IU–CM in December 2014, following the victory of Tania Sánchez in the party primaries to elect a candidate to challenge the Presidency of the Community of Madrid.[6]
He became a member of the 9th term of the Assembly of Madrid on 19 February 2015, covering the vacant seat of María Espinosa de la Llave,[7] who had precisely left the party along Tania Sánchez to pursue a different political project.[6]