Plaid Cymru are ‘now well placed to provide Wales with its next first minister’, Sir John said

If Labour loses the Senedd seat, it will be a huge blow for party that has dominated politics in Wales for a century

Labour come third with just 11% of vote in a seat that has long been one of its strongholds

Plaid Cymru’s byelection victory signals a seismic shift in Welsh politics that will rattle Westminster

Plaid Cymru are ‘now well placed to provide Wales with its next first minister’, Sir John said