As well as his views on Marxism, Jeremy Corbyn has also been asked what he thinks of the respective Tory and UKIP immigration pledges today.

On the former, the Labour leader said: "They have made the same promise in 2010, and made the same promise in 2015, and didn’t get anywhere near it on any occasion."

He said there had to be "fair migration and managed migration" and Labour's full policy would be published in the manfesto next week. 

On the latter - UKIP's "one in, one out" policy - Mr Corbyn said:

Image source, Getty Images

On Sunday, shadow chancellor John McDonnell told the BBC there was "a lot to learn" from Das Kapital - Karl Marx's magnum opus.

But what about Jeremy Corbyn?

"All great economists influence all of our thinking," he said a short time ago.

"Yes, I have read some of Adam Smith; I have read some of Karl Marx; I have looked at the works of Ricardo. I have looked at many, many others. 

"I don't consider myself the world's greatest intellectual, but you learn from everybody. Don't close your mind to the thoughts of others. That way, we are all better informed."

Amol Rajan
Media editor

Despite various myths about the Nixon-Kennedy debate, occasional brilliant rhetoric - of which Lloyd Bentsen's put-down of Dan Quayle, external ("Senator, you're no Jack Kennedy") remains unsurpassed - and the phenomenon known as Cleggmania, TV debates don't tend to move the dial much, and voters don't get as excited about them as journalists.

But at a time when parliament is weak, they can be a boon to democracy, so today's announcement is a decent result.

Read more from Amol.

The Daily Politics

The BBC will hold a seven-way election debate on 31 May which will feature senior Conservative, Labour, Liberal Democrat, SNP, Plaid Cymru, Green Party and UKIP figures.

Those senior figures will not be Theresa May or Jeremy Corbyn, as they've said they won't turn up.

The BBC has said it won't "empty chair" either of them.

"We don't really believe in the empty chair, because the empty chair is a tactic to embarrass someone to come and talk to us, and actually, I'm not sure that's in the interest of the audience," Jonathan Munro says.

He adds: "The freedom of speech comes with the freedom not to speak... it's up to the voters to interpret the reasons [people have for not turning up]."

The Daily Politics

Theresa May and her husband Philip are to make a rare joint interview appearance on The One Show sofa tomorrow.

What about the Labour leader?

Well, Jonathan Munro, head of BBC Newsgathering, tells Daily Politics: "It's up to Mr and Mrs Corbyn about whether they want to appear as a couple or not.

"The invitation has certainly been extended."

Jo Coburn
Daily Politics presenter

The Daily Politics

The Lib Dems want to raise all rates of income tax by 1p in the pound to generate what they say would be billions more for the NHS and social care.

"This is a fair way of dealing with a national crisis," says Dick Newby, Lib Dem leader in the House of Lords. 

"The other parties admit there's a problem but haven't come up with a way of dealing with it."

He describes Labour's plan - to freeze tax rates for 95% of people, but raise them for the remaining 5% - as "frankly incredible". 

"You cant get six billion quid out of people earning more than £80,000 - we know that when you put headline tax rates up, they stop paying it. They avoid it."

Jo Coburn
Daily Politics presenter

The Daily Politics

On immigration, Catherine West, for Labour, makes a plea to the government.

"Please take students out of that silly target because it's breaking our education system," she tells the Daily Politics.

Many, including some Conservative ministers like Boris Johnson, agree with her, arguing that students contribute a huge amount financially and mostly go home at the end of their studies.

Tory Dominic Grieve says he doesn't believe most people are worried about students coming here, so long as they don't stay permanently.

On the recently made announcement that Labour would scrap all hospital parking charges in England, Ms West says money-wise, the policy is "do-able" - "between £160m and £190m".

She says it's something the government "could sort overnight", but has so far failed to do so.

The Daily Politics

Dominic Grieve, Conservative candidate and chairman of the intelligence and security committee until its pre-election dissolution, is asked about the Le Touquet agreement.

That's the accord between Britain and France that allows British immigration officers to check passports in Calais - and keeps many would-be migrants to the UK out.

New French President Emmanuel Macron has said he wants to review it.

"It would be very bad if it went, for us. It would create massive problems for freedom of movement between our two countries," says Mr Grieve.  

"I'm not horribly pessimistic about the Le Touquet agreement," he adds, but says it was predicted ahead of the referendum that it would be re-examined in the event of Brexit - and so it's turned about to be.

Reality Check

Image source, PA

Earlier, Conservative Nadhim Zahawi was discussing whether students should be removed from the immigration statistics and said: "Theresa May is not interested in fiddling the figures or spinning the figures for a day or two."

The point is that if the immigration statistics were perfect (which they're not - they're based on a survey) then most students would arrive to do a course and leave again a few years later. 

Removing them from the net migration statistics would reduce the figures for a few years, but have no impact in the long term.

But there's more to it than that - because there is a big gap between the numbers arriving to do courses and the numbers leaving after courses.

You can read the full Reality Check here.

Image source, PA

We're expecting Jeremy Corbyn to make a speech in the next hour in Worcester, but ahead of that he's been meeting trainees at the University of Worcester Nursing School.

Image source, PA

The BBC is also planning a live debate hosted by presenter Mishal Husain.

It will feature a seven-way podium debate on the substantive issues by senior Conservative, Labour, Liberal Democrat, SNP, Plaid Cymru, Green Party and UKIP spokespeople.

Theresa May and Jeremy Corbyn will also each be interviewed on The One Show during the campaign "to find out about the person behind the politics".

And Reality Check - the BBC’s fact-checking service – has a new weekly slot on the Sunday News at Ten bulletins presented by Steph McGovern.

The BBC has announced its plans for a series of TV programmes, which, it says, will place "the audience and the choice" at the heart of its prime time TV coverage.

The specials will feature members of the public questioning politicians on issues of policies from a number of locations, including London, Edinburgh, York, Cambridge, Bristol, Swansea and Manchester.  

David Dimbleby will host two Question Time Specials, in which leaders will face audience questions consecutively. 

The first will be with Theresa May and Jeremy Corbyn - and the second with Tim Farron and Nicola Sturgeon. 

Facebook's battle with "fake news" continues, with the social media behemoth launching a newspaper advertising campaign in the UK to warn users of the dangers of made-up news.

In the latest drive by the social media giant to tackle malicious information ahead of a national election, it is warning Facebookers to be sceptical of headlines that look "unbelievable" and to check other sources before sharing news that may not be credible.

The news agency Reuters also reports Facebook plans to delete bogus profiles and stop promoting posts that show signs of being implausible.

Theresa May tells the BBC's Laura Kuenssberg that the Conservatives will continue to try to cut net migration to "the tens of thousands".

Scotland's first minister is critical of the Tory pledge to cut immigration.

She says while politicians have a duty to address people's concerns about immigration, they have to be "honest" about the importance of attracting skilled labour. 

It's needed to make the economy "flourish", she tells us.

Tracey Higgins
BBC Local Live

Dr Julia Buckley will contest the Ludlow seat for Labour in next month's general election, the party has confirmed.

She has a PhD in research in political institutions and has lectured in politics at Nottingham and Wolverhampton Universities. 

Image source, Ludlow Labour Party

The mum-of-two, who lives in Shropshire, has been campaigning to keep Ludlow's maternity unit open and opposing the downgrading of Telford's Accident and Emergency department.

We're also aware that Philip Dunne will stand again for the Conservatives in the seat. 

Other candidates have until 11 May to submit their applications and we'll publish a full list of those standing soon after on the BBC Ludlow constituency page.