What the source says
Raúl Díaz Marín appears in the 2023 elected-members workbook.
The source associates this elected result with La Rioja and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).
Raúl Díaz Marín is named as elected for La Rioja 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 La Rioja and the candidature label PARTIDO SOCIALISTA OBRERO ESPAÑOL (PSOE).