Polling Day minus 37 was a day dominated by numbers:

• More than 100 business leaders signed a letter backing the Conservatives' approach on the economy
• The latest YouGov/Sun poll put the Conservatives and Labour neck and neck on 35%
• Revised GDP figures put UK growth for 2014 at 2.8% - the fastest growth since 2006
• David Cameron said a Conservative government would help business create two million new jobs over the next five years
• The Liberal Democrats promise an extra £3 billion on mental health services
• UKIP launched their latest campaign poster featuring escalators leading up the white cliffs of Dover. Leader Nigel Farage said net migration should fall to around 30,000 a year
• Plaid Cymru published its general election manifesto. They want equivalent powers for Wales to those now being granted Scotland, an extra 1,000 doctors and 50,000 new jobs via more public contracts for Welsh companies
• And finally, Nick Clegg met Joey Essex. The TOWIE star tweeted "nice to meet you to mate". One can only assume he meant "nice to meet you too, mate"

Labour's press team have taken to Twitter to give the party's reaction to a letter from 100 business leaders backing the Conservatives.

"No one will be surprised that some business people support the Tories. That's nothing new," says a spokesman.

"The recovery may have reached big firms in the City but it hasn't reached homes of working people. Labour's job is to stand up for them."

More on the letter from 100 business leaders, backing Conservative policy. The tycoons highlight George Osborne's policy of steadily lowering corporation tax to 20%.

"The result is that Britain grew faster than any other major economy last year and businesses like ours have created over 1.85 million new jobs.

"We believe a change in course will threaten jobs and deter investment. This would send a negative message about Britain and put the recovery at risk," says the letter to the Telegraph, external .

Signatories include BP chief executive Bob Dudley, Prudential chief executive Tidjane Thiam and George Weston, chief executive of Associated British Foods which owns the Primark, Silver Spoon and Ovaltine brands. Sir Charles Dunstone, the chairman of Dixons Carphone and Talk Talk plc, and Duncan Bannatyne, a former star of Dragons' Den also put their names to the letter.

Ed Miliband's zero hours announcement has split opinion.

Paul Kenny, general secretary of the GMB union, said: "At long last the damage of zero-hours contracts is to be addressed. This news will be welcomed by the tens of thousands of people for whom the world of work is a daily lottery."

TUC general secretary Frances O'Grady said: "Exploitative zero-hours contracts are a gift for bad employers who can effectively hire and fire staff at will."

The CBI - sometimes described as the bosses' union - is less impressed with Mr Miliband's policy.

CBI Director General John Cridland said: "The UK’s flexible jobs market has given us an employment rate that is the envy of other countries, so proposals to limit flexible contracts to 12 weeks are wide of the mark.

“Of course action should be taken to tackle abuses, but demonising flexible contracts is playing with the jobs that many firms and many workers value and need.

"These proposals run the risk of a return to day-to-day hiring in parts of the economy, with lower stability for workers and fewer opportunities for people to break out of low pay.”

The Conservatives have hit back at Ed Miliband's plans for a crackdown on zero hours contracts. A spokesman said: "Zero hours contracts account for just one in 50 jobs in our economy, this government has already banned the abusive ones - and all the while Labour presided over zero hours contracts with no safeguards for three terms and 13 years while they were in power.

"The fact is that three quarters of the new jobs since this government came to office are full time – these are families across the country getting into work with the security of a regular pay packet".

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Nick Clegg claims the Conservatives have an "ideological fatwa" against new wind farms The Lib Dem leader said the Conservatives had "abandoned" their commitment to green issues. He added: "They appear to have absolutely no interest in the environment whatsoever - in fact some of the most time-consuming battles I have been absorbed with over the last five years are stopping, particularly the Treasury, from tearing up the government's basic commitments to renewable energy and to a sustainable energy policy."

Ed Miliband's big campaigning theme on Wednesday will be zero-hours contracts. He will pledge legislation to ban such contracts for employees who are, in practice, working regular hours in the first year of a Labour government.

And he will seize on David Cameron's admission, in his TV clash with Jeremy Paxman, that he could not live on a zero hours contract. Speaking at one of his People's Question Time events, in Yorkshire, the Labour leader will say:"If it’s not good enough for him, it’s not good enough for you. And it’s not good enough for Britain either.

"These zero hours contracts have become a symbol of the Tories’ failing economy with stagnant wages and falling productivity leaving a recovery which isn’t reaching your front door and a deficit still at Downing Street’s door."

BBC polling expert David Cowling says: YouGov’s first poll, following their Sunday 4% Labour lead, had Conservative and Labour level-pegging on 35%; and TNS had the Conservatives one point ahead of Labour (33% v 32%) with UKIP on 16% - their highest figure in a campaign poll so far. A ComRes poll of 40 Labour seats in Scotland confirmed other national polls, with a 19% swing from Labour to the SNP. There was better news for Labour in two London-wide polls. ComRes had Labour on 46% and YouGov on 45%, with the Conservatives hovering around their 2010 share of 34%. ComRes represented a 5.5% swing to Labour and YouGov a swing of 4%. The Lib Dems were down from 22% in 2010 to 8% now. UKIP continued to underperform in London with around 8-9%; and the Greens will be disappointed that they were on 4% in both polls in a city where they have performed better than average in the past. For a more in depth look check out our poll tracker.

UKIP's national organiser in Wales has stepped down two days into the general election campaign. John Atkinson, who holds other positions in the party, told BBC Wales he needed to reduce his workload. Read more here .

The Scottish Conservatives have put the boot into the Lib Dems, following the latest ComRes poll showing a 19 point swing from Labour to the SNP. The Conservatives are marginally down on 13%, with the Lib Dems on 2%. "This poll confirms even more emphatically that the Lib Dems are finished in Scotland," says a Tory spokesman..

tweets, external : Worth remembering: 'in every election since 1992 the post-election budget has had big tax rises.' Institute for Fiscal Studies #election2015, external

tweets:, external You should be watching Free Speech on BBC Three with @TinaDaheley, external and @rickedwards1, external

Norman Lamb tells the BBC 3 Free Speech audience that the way parties are financed currently is "an outrage". The Liberal Democrats, he says, have tried throughout the Parliament to get agreement to limit donations. He accuses the Tories of trying to "buy" seats.