Latest poll from Yougov for The Sun shows:
Yes 34
No 52
Don't know 12
This puts the No campaign 18% ahead and is hardly any different to the polls conducted in 2012 which I reviewed here.
You can download the full poll statistics from Yougov here.
However the analysis of voting intentions by social group and gender makes very interesting reading.
It seems that income has little effect on how people will vote, but gender is a significant factor.
Males
Yes 44
No 47
Don't know 8
Would not vote 2
Females
Yes 25
No 57
Don't Know 16
Would not vote 2
If the yes campaign are going to close the 18% gap then persuading more women to vote yes is key.