The Leader of the Scottish Nationalist Party Alex Salmond has told the Scotsman newspaper, that the SNP are the only party offering a way to keep Scotland in the European Union.
The First Minister accused the Conservatives of abandoning Scotland in the pursuit of UKIP voters.
"The unionist case had been undermined now the UK’s own future within the 27-member state was up for grabs" he said. "If people voted Yes to independence next year Scotland would remain within the EU, leaving the rest of the UK to decide for itself".
But Professor Michael Keating a leading political scientist from the University of Aberdeen, has warned that if Scotland were to be independent from the rest of the UK it would "be unable to keep a foot in both camps" especially if the country retained the pound.
Cameron has pledged to back a Conservative MP's EU referendum bill, as Cable labelled the move potentially 'damaging' for the country.
114 Conservative backbenchers have voted in favour of a eurosceptic motion to amend the Queen's Speech in defiance of the Prime Minister.
David Cameron has denied he has buckled under pressure from his backbench MPs over the EU debate.