A flurry of last-minute polls on Scottish independence showed a slight lead for the No campaign on Tuesday.
Three surveys from pollsters ICM, Opinium and Survation all showed that 52% of decided respondents plan to vote No.
The polls found 8 to 14 percent of Scotland's 4.3 million voters were still undecided.
A final poll, by YouGov on behalf of The Sun, is expected later today.
One story dominates Thursday's front pages with some newspapers printing emotive pleas to voters to keep the United Kingdom as one.
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.