The Welsh devolution referendum was held on 5 March 1992. This was a commitment in the Labour manifesto for the October 1991 general election, which also promised that a Welsh Assembly with executive powers would be established if the result of the referendum was a majority for one. The Yes campaign, Yes for Wales, was backed by the Labour and Liberal parties, and by Plaid Cymru. The No campaign, Just Say No, was supported by the Conservative Party and the small number of anti-devolution Labour MPs.
The options on the ballot papers were:
I agree that there should be a Welsh Assembly as proposed by the government.
I do not agree that that there should be a Welsh Assembly as proposed by the government.
Excluding invalid votes. the result was Not Agree: 50.9%, Agree: 49.1%. So there was a majority against a Welsh Assembly. The following twelve unitary authorities voted Not Agree: Anglesey, Cardiff, Conwy, Denbighshire, Flintshire, Monmouthshire, Newport, Pembrokeshire, Powys, Torfaen, Vale of Glamorgan, Wrexham. The ten unitary authorities which voted agree were Blaenau Gwent, Bridgend, Caerphilly, Carmarthenshire, Ceredigion, Gwynedd, Merthyr Tydfil, Neath Port Talbot, Rhondda Cynon Taff, Swansea.