What the source says
Álvaro Morales Álvarez appears in the 2023 elected-members workbook.
The source associates this elected result with Burgos and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).
Álvaro Morales Álvarez is named as elected for Burgos in Spain's official 2023 Congress elected-result workbook under PSOE. This is a historical result record, not a current-tenure claim.
The source associates this elected result with Burgos and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).