 Ángel Sergio Guerrero is a lawyer from the Juárez University of the State of Durango, held diverse positions in the government of the state between which he served as Head of Interior, Senior officer and Secretary General of Government between 1970 and 1974.In addition he was state President of the PRI, Local Deputy and Federale Deputy in three occasions in L, LIII and LVII Legislatures.In 1998, he was the PRI candidate for Governor of Durango, winning the election with 40% of the vote, compared to 29% for his nearest rival, Maria Rosario Castro Lozano of the National Action Party.