Alex Salmond has been warned he needs a "seismic" turnaround for Scotland to back his plan for independence after his bruising TV debate with Alistair Darling.
The Scottish First Minister saw support for independence slump after he was put on the spot on his currency plan by former Chancellor Mr Darling, who is leading the pro-union Better Together campaign.
A Survation poll in the Scottish Daily Mail 50 percent of respondents planned to vote against independence - whilst support for breaking away from the UK fell away to just 37 per cent. Thirteen per cent of voters said they were still undecided.
Chief Executive of Survation Damian Lowe warned the 'yes' campaign would now need a "seismic change" in fortunes in order to win.
"I think they'll need to go back to the drawing board on some of these issues and come back with some answers," he said.
The highest level of support for remaining part of the UK recorded by Survation since February came after Mr Darling was widely considered to have come off best in last week's live TV debate.
Mr Darling pressed his SNP opponent on how Scotland could keep the pound after a post-independence currency union was ruled out by the Treasury.
Survation polled 1,100 people in Scotland aged over 16 years old on Aug. 6 and 7.
