The No campaign faced renewed criticism from within its own ranks this weekend with senior Tories admitting that Yes is on a path to victory in September's referendum.
Among those voicing concern about the state of the anti-independence campaign are Lynton Crosby, the prime minister's election 'guru', the mayor of London Boris Johnson and former Scottish secretary Lord Forsyth.
The latter publicly attacked both David Cameron and the Labour opposition at Westminster for their 'complacency'.
He told The Sunday Times: "Where is the government? Where is the opposition making the case in the United Kingdom parliament for the United Kingdom?"
According to The Sunday Times, Tory critics are increasingly alarmed by the cross-party anti-independence campaign led by Alistair Darling, admitting it is too negative and lacking in momentum.
Crosby is understood to have described the No campaign as 'feeble', that polls showing the No campaign in front are wrong and that victory for Yes in September is not only possible but likely.
The newspaper quotes a source saying Boris Johnson is among senior Tories who believe the No campaign's relentless negativity is alienating voters, particularly women.
The renewed internal criticism heaped more pressure on David Cameron to reverse his decision to refuse a head-to-head TV debate with Alex Salmond.
Yes Scotland Chief Executive Blair Jenkins said: "This report is confirmation of what we have always said - that against the relentless negativity and 'can't do' attitude of the No campaign, the hope, ambition and confidence of Yes will win through.
"More and more people are coming to Yes because they realise that taking responsibility for our own future and making our own decisions is the best way to achieve a better, fairer and more prosperous nation.
"Even some of our fiercest opponents are beginning to accept that Yes presents a far more attractive case for the future .