How Exit Polls Work: Survey Design and Predictions
Data as of Sources: ECI, affidavits, published records Method is public and auditable
Direct answer High confidence
Exit polls survey voters as they leave polling booths, convert responses into national vote-share estimates, then map vote-share to seat predictions using constituency-level conversion models and historical incumbency effects. Results are weighted and aggregated.
See exit polls hub and what is an exit poll for context.