The people of Scotland are to be offered a historic opportunity to devise a federal future for their country before next year's general election, it emerged on Saturday night, as a shock new poll gave the campaign for independence a narrow lead for the first time.
Amid signs of panic and recrimination among unionist ranks about the prospects of a yes vote on 18 September, the Observer has learned that a devolution announcement designed to halt the nationalist bandwagon is due to be made within days by the anti-independence camp.
The plan, in the event of a no vote, is that people from all parts of Scottish society – rather than just politicians – would be invited to take part in a Scottish conference or convention that would decide on further large-scale transfers of power from London to Holyrood.
A poll by YouGov for the Sunday Times sent shockwaves through the political establishment north and south of the border as it showed the yes camp had 51% to 49% for no, excluding the don't knows. Better Together leader Alistair Darling said: "These polls can and must now serve as a wake-up call to anyone who thought the referendum was a foregone conclusion."
David Cameron was at Balmoral on Saturday night on his annual visit, where growing support for a yes vote was likely to have been raised with the Queen.
With momentum now strongly behind Alex Salmond's push for full-blown independence, the no campaign is desperately searching for ways to seize back the initiative in the last 11 days of campaigning. A win for the yes campaign would represent a stunning turnaround, and unleash the biggest constitutional crisis in the union's 300-year history: it was 14 points behind in polls taken less than a month ago.
However, another poll carried out by Panelbase for Yes Scotland found that no is leading 52% to 48% when undecided voters are excluded.