Professor of Administrative Law at the University of A Coruña, he is the author of different monographs and scientific works of his speciality, public contracts, territorial organization and prisoners rights.
He was a member of the BNG since 1993, member of the National Council since 2001 and the national executive since 2003.
He was deputy in Madrid representing A Coruña (2000-2004) and spokesman of the BNG in the Galician Parliament during the session 2005-2009.
He coordinated the report about the proposal for the text of the new statute of the BNG.