Campaigners in the battle for Scotland's future say the referendum result is too close to call with less than two weeks until the vote.
The Yes camp claims to have the "big momentum" behind it, while opponents of independence insist they will win.
It comes as one poll put Yes Scotland narrowly ahead for the first time.
With just 11 days of campaigning left, both sides are stepping up their bids for the wavering voters who could yet sway the result.
On 18 September voters will be asked the Yes/No question: "Should Scotland be an independent country?"
The final push for votes comes as a poll for the Sunday Times suggested that, of those who have made up their mind, 51 percent planned to back independence, while 49 percent intended to vote no.
The poll of 1,084 people, carried out between 2 and 5 September, is the first and only serious study to put the Yes campaign ahead.
The cross-party Better Together campaign - which supports the Union - had previously retained a lead in polls, often reaching double digits.
The BBC reports pollsters say the margin of error means the race is too close to call.
They say there is a trend and a comfortable lead for the no campaign appears to have evaporated in the last few weeks.