Labour leadership front-runner Jeremy Corbyn is due to speak at a rally in Aberdeen tomorrow.
The veteran campaigner will arrive in the Granite City amid opinion polls giving him a clear lead in the race to succeed Ed Miliband.
The last-remaining available seats for the event at the 250-capacity Arts Centre and Theatre on King Street were filling up fast last night.
Bookmakers have installed Mr Corbyn as the favourite in the contest, while the latest poll by YouGov gave him the 53% backing, compared to Andy Burnham on 21%, Yvette Cooper on 18% and Liz Kendall on 8%.
Aberdeen councillor Nathan Morrison is co-ordinating the left-winger’s campaign in the north-east.
He said: “Jeremy is doing a fantastic job. The campaign has been going fantastically but I would say people can’t be complacent about it if they want him to win.
“I’m backing Jeremy because fundamentally he is an anti-austerity candidate, and he can provide a hope and vision for Britain. He wants Labour to get back to its socialist roots.”
Tommy Campbell, regional officer for the Unite trade union, said: “It’s fantastic news that Jeremy Corbyn is visiting Aberdeen.
“This is a great opportunity for people to come along and listen to Jeremy about his vision of the future under his leadership of the Labour Party.
“There is a large turnout expected and we are looking forward to asking questions and hearing directly from Jeremy about the policies he wishes to see the Labour Party pursuing in the future.”
Mr Corbyn is expected to take questions from the audience at the event in Aberdeen.
Responding to the latest polls yesterday, he said: “The campaign is going very well but I think we should be a little bit cautious because there is still time for people to register to join the party or register as supporters and no ballot papers have yet been sent out and we won’t know the result until next month. So let’s be a bit cautious.”
The Corbyn campaign has continued to gather momentum despite warnings from a string of senior party figures that choosing the veteran left-winger would be catastrophic for Labour’s electoral chances, with one grandee comparing him to former Tory leader Iain Duncan Smith.
Tony Blair’s former spin doctor Alastair Campbell has urged Labour supporters to sign up to vote for “anyone but Corbyn” to help the party “stop itself driving over a cliff”.