Jeremy Corbyn told activists 'they underestimated us' as he vowed to win the election in a major rally speech on the eve of the last day of campaigning.

The Labour leader said the Tories had not realised how popular his party's message would be.

And waving the party's manifesto in his hand - described by experts as the most left-wing in Labour's history - he said his tax and spend plans have proved a hit with voters.

Mr Corbyn made a determined pitch to woo the youth vote as he addressed the rally on the eve of the final full day of campaigning before Thursday's vote.

He threw an event which observers said was half music festival half campaign event - roping in trendy electro band Clean Bandit and comedian Steve Coogan to warm up for him.

Corbyn declared 'they underestimated us' as he vows to become PM at Birmingham rally

Steve Coogan, pictured today with the Labour leader, warmed up for Jeremy Cotbyn at his rally

Corbyn gets ready to go on stage at the Birmingham rally this evening. He laid on an evening of music and promised to scrap university tuition fees in a bid to win over young voters

The Birmingham rally was beamed via videolink to simultaneous events in five different cities.

Addressing the crowd, he said: ‘And they thought it would all be over by June 8, well I’ll tell you what – they underestimated us didn’t they?

‘They underestimated us, they underestimated us and the campaign we would mount.

‘And do you know what the turning point was? When we produced this...'

The Labour leader then waved his manifesto - which pledges to hike taxes and borrow many billions of pounds and renationalise the rail, mail and water industries.

He said: ‘People say to me all this is a wish list. No it’s not – it’s a programme; it’s an agenda.

‘And do you know what: we are going to carry it out.

‘And it does cost of course. But we live in a country of great riches – we also live in a country of increasing poverty.’

He said a Labour victory would ‘change the political direction of this country’.

Trendy electro group Clean Bandit played at the Corbyn rally in Birmingham tonight. Labour has made winning over young voters the central part of their election campaign

Jeremy Corbyn addressed the crowd in front at the rally , which observers said felt more like a music festival than a political event. The Labour leader is trying to woo young voters

The rally had echoes of Neil Kinnock's triumphalist Sheffield rally when the Labour leader swept to the stage shouting ‘We’re all right! We’re all right!’.

But just a week later John Major won a shock 21-seat majority and Mr Kinnock was forced into a humiliating resignation.

Mr Corbyn added: : ‘Let us resolve to do things differently. Invest in education, invest in health, invest in housing, invest in jobs. Invest in a future for all of us.

‘This election on this programme gives us all an opportunity to change the political direction of this country.

‘Wherever you go, ask people what kind of country, what kind of world, what kind of society they want to live in.’

Mr Corbyn has tried to win over youth voters by promising to scrap university tuition fees and hinting at writing off some of the debt of graduates who have already paid.

Comedian Steve Coogan was another of the Corbyn warm up acts in the celebrity backed rally

The £11bilion a year giveaway is one of the most expensive in the manifesto and critics have warned the move could leave a blackhole in university budgets if he government cannot find the cash to plug it.

Mr Corbyn again urged young voters to cast their ballots on Thursday, adding: ‘What we do in this manifesto…young people are our future young people give us everything, we must give them all the best chances we can.’

He also gave a shout out to the hashtag Grime4Corbyn which was used by rappers who backed the Labour leader.

He added: ‘Can I say thank you to so many musicians that have come on board – so many people from so many different cultural walks of life have come on board to support about in this election.’

Earlier, Coogan – who plays the character Alan Partridge – described Theresa May as having the ‘charisma of a pancake’.