What the source says
Sergio Matos Castro appears in the 2023 elected-members workbook.
The source associates this elected result with Santa Cruz de Tenerife and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).
Sergio Matos Castro is named as elected for Santa Cruz de Tenerife 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 Santa Cruz de Tenerife and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).