The Yes campaign has already secured more than 40 per cent of traditional Labour voters and is now hopeful of getting a majority of them in tomorrow's vote, according to its leader Blair Jenkins.

And the Yes Scotland Chief Executive, speaking at the campaign's last rally in Glasgow, also dismissed Ed Miliband's complaints of "ugly" intimidation by pro-independence campaigners as nothing more than another attempt at hyperbole to distract people from how the No campaign was losing the argument.

Around 300 people with Yes placards, balloons and Saltires crowded onto the steps near Donald Dewar's statue in the Buchanan Street shopping centre - now bearing a Yes sticker on its lapel - for the pro-independence campaign's final public gathering.

As a piper played, the enthusiastic crowd chanted "yes we can - and we will" and "hope not fear".

Among those also addressing the crowd were Dennis Canavan, Chairman of Yes Scotland's Advisory Board, Patrick Harvie, Scottish Green Party leader, and Elaine C Smith, the actress and prominent Yes campaigner.

Amid the swell, Mr Jenkins insisted he was convinced of victory because of all the grassroots' feedback.

"We're talking to hundreds of thousands of people. We're talking to people canvassing at a rate that's more than twice the rate of any political party in Scotland has ever exceeded...We have a far better idea of where the public mood of Scotland is."

Noting how his campaign's private polling indicated that 40 per cent of Labour voters were intent on voting Yes, Mr Jenkins said: "I'm hopeful tomorrow that 50 per cent or more of people who normally vote Labour in Scotland will vote Yes...

"We've had a very good response from Labour voting areas, so I believe what we have done, as the biggest grassroots movement Scotland has ever seen, is bring into the debate people who have become completely alientated from the political process. That has been a tremendous achievement.

"I believe people who have Labour values in Scotland are, by a majority, going to vote Yes."

Asked about Mr Miliband's treatment in Edinburgh yesterday when he was confronted by a mob of Yes supporters, Mr Jenkin said: "It didn't look to me anything different than what you see in a normal general election campaign."

Asked if he thought the Labour leader was protesting too much, he replied: "Yeah, indeed. What has happened in the last couple of weeks is there's been an attempt by the No campaign to hype up any examples of people not behaving absolutely perfectly to try to misrepresent the nature of this campaign. It's a classic campaign tactic when you are losing the argument, change the subject and that's what the No campaign have been trying to do."

The former BBC executive, asked about the recent Yes demonstration outside the Corporation's Glasgow HQ, described it as a "good-natured crowd". He added: "Again, there has been an attempt, for fairly obvious reasons, to talk up that event as though it was something different from what it was."

Later, Ms Smith, asked if she had any regrets that a Yes vote, while seeing the rebirth of a new nation, would also destroy another one, replied: "I don't think we will destroy another nation at all. For many people across the UK, this has not felt like one nation for a long time."

The popular actress insisted the Yes movement was "a beacon of light" for people across the world, showing them that "it does not have to be that only money matters".

She explained: "It seems we live in the world where we know the price of everything and the value of nothing. Value and what people's lives mean has come back to the fore and that's a wonderful thing."

Ms Smith roused a final cheer from the Yes crowd when she quoted the playwright Oscar Wilde, saying: "'I don't want to live in a world where Utopia is not on the map. Even if we do not reach it, let's lift anchor and set sail.'"