A survey of more than 1,000 Scottish voters, conducted by Survation for the Diffley Partnership, forecast Nigel Farage's party will win 19 seats in the Scottish Parliament.
As the demonstrator was taken out of the event in Renfrewshire on Thursday afternoon, Mr Farage shouted after them: 'Oh have a look - you need a haircut, mate.
The political party founded by Alex Salmond is on the verge of collapse just 16 months after the former First Minister's death - and will field NO candidates in May's Holyrood election.
Against a backdrop of major dislike for Keir Starmer, Anas Sarwar's party is on course to take just 15 per cent of the vote in the Scottish Parliament election.