He also represented the PSOE on Madrid city council .
Puerta was initially a Spanish Socialist Workers ' Party ( PSOE ) member and was elected for that party to the Spanish Congress of Deputies at the 1977 election for Madrid but later joined United Left .
Puerta also represented the PSOE on Madrid city council .
Puerta was initially a Spanish Socialist Workers ' Party ( PSOE ) member and was elected for that party to the Spanish Congress of Deputies at the 1977 election for Madrid but later joined United Left .