Plaid Cymru has won the by-election in the Senedd seat in Caerphilly for the first time, securing nearly 16,000 votes.
This victory marks a historic win for Plaid Cymru and a significant political shift in Wales, indicating the collapse of Labour's vote and a potential positive outcome for the party in the 2026 Senedd election.
Tonight, the people of Caerphilly have spoken loud and clear. They’ve chosen hope over division, and progress over the tired status quo, and backed Plaid Cymru’s positive, pro-Wales vision.
According to Plaid Cymru leader Rhun ap Lorwerth, the result confirms that only Plaid Cymru can stop Reform in Wales and that Labour's time is over.
Author's summary: Plaid Cymru wins historic by-election in Caerphilly.