Labour's Century of Welsh Dominance Ends as Plaid Cymru Sweeps Senedd

A political earthquake has struck Wales, as Plaid Cymru has decisively ended Labour’s 100-year reign in the Senedd elections, according to The Guardian. This historic victory sees Plaid leader Rhun ap Iorwerth ready to form the next Welsh government, fundamentally reshaping the political landscape of the nation.

This monumental shift follows decades of Labour dominance, which had been in place since devolution began in 1999. The Guardian reports that Plaid Cymru secured 43 seats, pushing Reform UK into second place with 34, and relegating Labour to a distant third with just nine seats. This outcome was not as close as some polls suggested, particularly after a strong showing for Reform UK in earlier surveys.

Rhun ap Iorwerth, speaking from Llandudno, declared the moment “100 years in the making,” referencing Plaid Cymru’s founding in 1925. He stated, “The people of Wales have today decided on the next steps in Wales’s journey. Plaid Cymru now stands ready to take the necessary steps to form the next government.” Meanwhile, a defeated Eluned Morgan, Welsh Labour leader, called her party’s prospects “catastrophic” and resigned, taking “full responsibility” for the result, as reported by The Guardian.

For ordinary people in Wales, this outcome signals a profound change in governance, with the possibility of a Welsh independence referendum now on the table, making Wales the third Celtic nation controlled by a separatist party. The Guardian highlights that Labour’s long-standing success in portraying itself as distinct from UK Labour, effectively using “red Welsh water” to distance Cardiff Bay from Westminster, has now evaporated. This loss is a clear rejection of Labour's management of public services, which observers note have fallen behind other UK nations.

This historic defeat for Labour means the party must now contend with a political reality where multi-party governance is the norm, as Eluned Morgan herself conceded. The new Plaid Cymru government, without an overall majority, will immediately begin urgent conversations with other parties to form a stable administration, with the future direction of Wales now firmly in the hands of a party committed to a nationalist agenda.