The Centro de Investigaciones Sociológicas (CIS) polling agency has reported fluctuating voter intentions for Spain's major political parties amid recent political scandals. In mid-June 2025, the CIS survey showed the Spanish Socialist Workers' Party (PSOE) leading the People's Party (PP) by seven points, with PSOE polling at 34.3% and PP at 27.3%, despite controversies surrounding figures such as Leire Díez and fiscal García Ortiz. However, by early July 2025, the emergence of the 'Caso Cerdán' scandal caused a sharp decline in PSOE support, dropping by approximately 7.3 points, bringing the party's lead over the PP to a narrow margin of about half a percentage point. Concurrently, the far-right Vox party experienced a surge in support, reaching nearly 19% according to the CIS. The PP's support slightly decreased but remained competitive. Regional polls also reflected these dynamics, with the PSOE winning in Castilla y León with 30.7% against PP's 24%. In Andalusia, the PP, led by Juanma Moreno, was projected to secure a majority with a 22-point lead over the PSOE, according to a regional CIS survey. These polling trends highlight shifting voter preferences influenced by ongoing political controversies and regional electoral dynamics.