Plaid Cymru defeated Reform UK in the Welsh Parliament by-election for Caerphilly, with Labour coming third and suffering its first parliamentary defeat there for 100 years.Nigel Farage's Reform had hoped it could win in south Wales having pledged to "throw everything" at the campaign,

The populist, far-right Reform UK party had hoped to win big in a local by-election to the Welsh parliament but lost to the Welsh nationalists. But the biggest losers were Prime Minister Keir Starmer's Labour Party.

Plaid Cymru’s leader Rhun ap Iorwerth has hailed the by-election result as ‘real evidence’ that people are putting their ‘faith’ in the party

Keir Starmer’s Labour Party has suffered a local byelection defeat in a traditional Welsh stronghold, losing Caerphilly for the first time in any election in a century to the nationalist party Plaid Cymru.

Under the proposals - which were made in the Plaid Cymru manifesto for the 2021 Senedd elections - aims for only half of all journeys in Wales to be made by car by 2030, with the remainder shifting to public transport, walking, or cycling. The party's manifesto for the 2026 election has not yet been released and may have different policies.