Chief Secretary to the Treasury Danny Alexander has said the recent narrowing between the Yes and No votes in polls shows that "every vote has to be fought for".
He said there are still "huge unanswered questions" which the Yes Scotland campaign has to deal with, especially surrounding the issue of currency.
Campaigners have made their case for and against Scottish independence in a 'Town Hall' style debate.
Things were a lot more civlised in tonight's 'town hall' style debate than in the head-to-heads between Alex Salmond and Alistair Darling.
Some of the leading players in the Yes and No campaigns battle it out in the third major debate on Scottish independence.