Labour Faces Historic Exclusion from Welsh Government as Poll Predicts Plaid Cymru Surge
A groundbreaking YouGov MRP poll has sent shockwaves through Welsh politics, projecting that Labour could be pushed out of the Welsh government for the first time in history. The survey, conducted between 9 and 18 March 2026, indicates a dramatic realignment in the Senedd, with Plaid Cymru set to become the largest party with 43 seats.
Major Blow to Starmer as Labour Vote Collapses
The poll reveals a significant collapse in Labour's support, with their vote share dropping by 23 per cent to just 13 per cent. This would leave them with an estimated 12 seats, a stark decline from their current standing. The projected result could see Labour's current First Minister of Wales, Eluned Morgan, lose her seat, marking a major blow to Sir Keir Starmer's leadership and the party's influence in Wales.
Rise of Plaid Cymru and Reform UK
Plaid Cymru's surge to 43 seats positions them as the dominant force, while Nigel Farage’s Reform UK is projected to secure 30 seats, becoming a significant player in Welsh politics. The Greens are expected to make a historic breakthrough, winning 10 seats for the first time in the Welsh Senedd, potentially forming a progressive government coalition with Plaid Cymru.
Conservative and Liberal Democrat Decline
The poll also indicates a sharp decline for other traditional parties, with the Conservatives potentially reduced to just one seat and the Liberal Democrats to zero in Wales. This shift underscores the changing political landscape and voter dissatisfaction with established parties.
These findings highlight a potential seismic shift in Welsh governance, with Labour facing unprecedented exclusion and new alliances forming to shape the future of the Senedd.
