Plaid Cymru Wins Most Seats in Wales as Labour Loses Power for First Time Since 1999

Plaid Cymru won 43 of 96 seats in the Welsh Parliament on May 8, 2026, emerging as the largest party and ending Labour's uninterrupted rule since devolution began in 1999, according to BBC reporting. Reform UK came second with 34 seats, while Labour secured only nine, marking a historic collapse in its traditional stronghold. Labour's Welsh leader Eluned Morgan conceded defeat after losing her seat, becoming the first sitting head of a UK devolved government to do so. She announced her resignation, stating, 'Welsh Labour has today suffered a catastrophic result,' and urged the party to reassess its direction amid nationwide electoral setbacks. Plaid Cymru leader Rhun ap Iorwerth declared the election a mandate for change, saying his party was ready to form the next government. The Welsh Parliament, established in 1999, holds authority over health, transport, and social policy, while the UK government retains control over defence and foreign affairs. Formal negotiations to establish a governing coalition will begin this week, with Plaid Cymru likely seeking support from smaller parties or independents to secure a majority. The Welsh Parliament is expected to convene within 14 days to confirm the new administration.