The Welsh Labour Party is expected to lose its majority in the Senedd, ending a century-long streak of winning elections in Wales [1].
This shift represents a historic realignment of power in the Welsh Parliament. The projected defeat signals a collapse of long-standing party dominance and opens the door for Plaid Cymru to potentially lead a new government in Cardiff [1, 2].
Counting is underway following the May 2026 Senedd election [2, 3]. Early projections suggest a steep decline for Labour, which is expected to be reduced from 29 seats to around 10 [3]. A spokesperson for Welsh Labour said they were "deeply disappointed" by the results [3].
While the party has ruled Wales for 27 years [3], the broader streak of electoral victories in the region has spanned 100 years [1]. This era of control is now coming to a close due to a voter shift and a surge in support for Plaid Cymru [1, 2].
Rhun ap Iorwerth of Plaid Cymru addressed the moment as the party prepared for its likely role as the successor government. "We remember all those who did those hard yards for Wales and who aren't here to see this moment," ap Iorwerth said [2].
The transition marks one of the most significant political upheavals in the history of Welsh governance. The loss of nearly 20 seats would strip Labour of its ability to pass legislation without significant cooperation from other parties, or the formation of a coalition [3].
“Labour is expected to be reduced from 29 seats to around 10.”
The projected collapse of the Labour majority suggests a fundamental shift in the Welsh electorate's priorities. By ending a century of dominance, the results likely reflect a growing desire for nationalist representation via Plaid Cymru and a rejection of the established political order in Cardiff. This creates a volatile legislative environment where minority governments or complex coalitions will be the new norm.
