UNDECIDED voters in the independence referendum have moved to Yes at a rate of two to one compared with those who have shifted to No, according to Yes Scotland research.

But Better Together say the arguments for keeping Scotland in the UK have changed in recent months with the cross-party offer of more powers if Scotland votes No.

Both sides have pledged to up their game as the 100-day countdown to the referendum begins.

Yes Scotland leader Blair Jenkins said independence is "a prize that we must do everything in our power to secure for the people of Scotland".

Better Together leader Alistair Darling said: "The nationalists are running out of arguments - and they are running out of time."