The battle lines have been drawn as the Government tries to cut the welfare bill.
It comes just days before a crucial vote aimed at capping working-age benefits by 1% over the next few years - that would amount to a cut in real terms.
The problem for the Government is that recent polls show they may not have the public on their side. Could that be why the Work and Pensions Secretary Iain Duncan Smith has published these figures?
More top news
In Edinburgh tonight you can hear it and feel it. The buzz, the banter of the day and the thrilling sense something big is coming tomorrow.
There is nervousness, anxiety and on the streets of Edinburgh fuelled by an atmosphere unlike anything seen before in recent UK politics.
How will the vote go? What would a Yes victory do to England? Policital Editor Tom Bradby answers readers' questions on the referendum.