Labour expected to lose Senedd after century of winning Welsh elections BBCFinal YouGov MRP of the 2026 Senedd election shows Plaid Cymru on course to be the largest party YouGovSenedd election 2026: Wales goes to the polls BBCReform and Plaid Cymru likely to benefit from polarisation of Welsh politics The GuardianWelsh Senedd Election Forecast Electoral Calculus
