Sigma Dos / El Mundo — Daily tracking — Congress of Deputies — 12 November 2026

First daily tracking release, published by El Mundo on 12 November 2026. Original article and technical sheet verified. National voting-age residents eligible to vote; mixed CATI/CAWI through Sigma Dos by Trust Survey. Base sample 3,120 plus 750 daily interviews; estimation sample 3,870. Fieldwork 3–11 November; stated margin of error ±2.1 points at 95.5% confidence. Frente Amplio 7.3% is the source aggregate including its general (5.8%), Canary (0.4%) and Valencian (1.1%) labels; these components are not added again as separate results. Source does not call this aggregate Sumar. Only explicitly reported vote shares are entered; unreported parties are missing, not zero. Published seat ranges are not entered as voting-intention percentages.