The BBC's Victoria Derbyshire programme is coming live from Crewe this morning with a panel of undecided voters. They're putting forward their views and asking politicians questions on the big issues.

You can watch live on the BBC News Channel and BBC2, and catch up later on the BBC iPlayer.

BBC Radio 5 Live

Jo Swinson has wrapped up now but we're just mopping up one or two last bits. She was also challenged by a caller over whether it is democratic to go against the wishes of the 52% of people who voted to leave the European Union.

Ms Swinson said she wanted to give people "a democratic choice".

“We’re in an election right now - I think it’s important people who want to Remain have a voice," she said, adding that the way the UK could leave the EU now was "not what was promised in 2016".

Asked which was more important to her - remaining in the EU or maintaining the United Kingdom - Ms Swinson replied: "That's like asking me to choose which of my children I love more...

"I’m passionate about the UK - I’m a Scot, I’m a Brit, I’m a European.”

BBC Radio 5 Live

For the second time this morning, Jo Swinson is quizzed over her pledge to reform the Gender Recognition Act, which host Rachel Burton points out would effectively allow individuals to determine their own gender identity.

"To be honest [people] largely can currently and I think this formalises that. It removes existing barriers that end up creating discrimination of a very vulnerable group of people," she says.

Anna, from Warwickshire, asks about the potential for male sex offenders to enter female spaces such as gym changing rooms.

Ms Swinson says: "I've never been asked for a certificate to prove my gender when I've been accessing any women's spaces, so it's not as if that's the way we're going to resolve this issue... So we need to make sure there are proper protections in place."

She adds: "If there are people who want to act in that way, they should absolutely be dealt with - and I just don't buy the idea that further marginalising a group of vulnerable people, that that gives us any further protection."

Asked about introducing gender neutral uniform in faith schools, and in particular Muslim faith schools, she says: "It's not about saying 'you cannot wear headscarves', it's about saying 'you cannot say that only one gender can wear that'.'"

BBC Look North's political editor makes an interesting observation about who's been where on the campaign trail.

Mr Johnson is touring a number of Labour-held Leave voting seats with the election just a few days away - he started in Grimsby this morning.

Your guide to the BBC Question Time special debate with a young audience.

BBC Radio 5 Live

Back to the phone-in and the next question to Jo Swinson comes from Sarah, in Cheltenham, who asks: "In light of climate emergency is it time that we rethink economic growth?"

“I think we all want to have an economy that is working for people and making us prosperous," Ms Swinson replies.

However, she says the government needs to think about whether the things it measures are actually making people's lives better, adding that the UK is "obsessed" with GDP.

Ms Swinson argues this figure "doesn't tell us everything", adding that while she wouldn't abandon GDP the Lib Dems would use a "range of different indicators" which also measure issues like the impact on the natural environment.

As Jo Swinson talks to the BBC, Boris Johnson has been speaking to radio station LBC.

He told them he would try to find a way to honour his previous promise to oppose Heathrow airport expansion by lying down in front of bulldozers - but it might be difficult for him.

An expansion plan for Heathrow has already been approved by Parliament, including building the first full-length new runway in the London area for 70 years, but the plans have proved controversial and have been challenged in court.

"On Heathrow, it's a private sector project which is still to satisfy its strict legal obligations on air quality and noise pollution," Johnson told LBC radio.

"I don't see much sign of any bulldozers yet... I would have to find some way of honouring that promise. It might be technically difficult to achieve... Let's wait and see when the bulldozers arrive."

BBC Radio 5 Live

Ms Swinson admits it's "less likely" that she can still become PM - something she said at the start of the campaign was a real possibility - but says she won't apologise for being "ambitious and bold".

She says the biggest political parties had a "similar-ish" rating in the polls over the summer, and that with the first-past-the-post system it was "unpredictable" what might happen closer to polling day.

Asked whether she thinks saying that she would become PM and recoke Article 50 was a strategic error, she says her party will "absolutely look at the election" and analyse their strategy - but will do it later "in the context of broader information".

She adds: "Also what has happened is a squeeze because you had the deal between the Brexit Party and the Conservative Party which has united the Leave part of the electorate, and that has made a massive, massive difference to our electoral prospects."

Another listener asks how she proposes to lift children out of poverty.

Ms Swinson says there needs to be more money in the universal credit system, more generous work allowances, and more investment and funding in "early year settings" - including funding in Sure Start centres and free school meals.

The editor at the Somerset County Gazette Paul Jones, the Metro's Joel Taylor and the former deputy political editor of the Sun are among those listening and digesting what the Lib Dem leader is saying.

BBC Radio 5 Live

If another Brexit referendum did take place, Ms Swinson is asked whether she would accept the result.

Ms Swinson replies that she would, but says: "I’m not going to change my view on whether I think it’s better to Remain", adding that she would continue to argue for a close relationship with the EU.

“I’m not going to stop being pro-European… but I would have confidence that the public had a majority in favour of a specific Brexit path," she says.

“At the moment I don’t think there is any reason to believe that there is a majority in favour of the specific hard Brexit that Boris Johnson’s put forward.”

With just three days to go, it's a busy morning so far:

• Lib Dem leader Jo Swinson is currently taking questions from the public - Brexit is dominating so far
• Boris Johnson is focusing his efforts on Leave-voting Labour seats - those where he hopes his "get Brexit done" message will lead to a breakthrough.
• But he's facing questions over the issue of customs checks on goods moving between Great Britain and Northern Ireland if his Brexit deal is implemented. Over the weekend, Mr Johnson insisted there wouldn't be any, but BBC Reality Check correspondent Chris Morris says he's wrong to claim there will no checks in either direction because that assertion runs counter to what is written in his own withdrawal agreement. Read more on checks here
• DUP leader Arlene Foster suggested this morning that Mr Johnson had "broken his word" over the issue of checks and said it would be a case of "once bitten, twice shy" when it came to dealing with the PM in future
• Labour, meanwhile, is setting out what it would do in the first 100 days if it wins the election. The party is promising to deliver a Budget to "end austerity" and get "money moving out of Whitehall and the City" to the rest of the country
• The BBC wil hold a special debate involving younger voters later - the programme is hosted by Emma Barnett and starts at 20:30 GMT
• We are also broadcasting all day from Crewe, in a marginal seat, speaking to voters and answering their questions - we're especially having a big push in trying to help undecided voters

She's explained why she couldn't join forces with Jeremy Corbyn and now Jo Swinson says it's "pretty inconceivable" that the Lib Dems would support the Conservatives in a coalition either.

Responding to a question from Finley, in Bonnyrigg, she says they are "pretty indistinguishable from the Brexit Party right now" adding that both Labour and the Conservatives have "gone off to the extremes".

She rules out supporting the Tories completely, saying: "They are absolutely full-on hard Brexit, no-deal Brexit, wreck the economy. I don't see them changing from that any time soon. They have gone so far along that path that they are in bed with Nigel Farage."

On why people should vote for her party, she adds: "The more Liberal Democrats that there are in the next Parliament, the more likely it is that we will be able to stop Brexit."

BBC Radio 5 Live

Next Jo Swinson is asked whether she is putting her career above the goal of ensuring a Remain-supporting party is in power.

Ms Swinson has ruled out putting either Boris Johnson or Jeremy Corbyn into No 10.

In response, she says: “I’m very open to and have been working with people from all different parties on this issue of stopping Brexit", adding that she has worked alongside Labour, Conservative and SNP MPs in Parliament to stop a no-deal Brexit.

Lib Dem MPs will always vote for legislation to implement another referendum, she adds.

However, Ms Swinson says she has been "outspoken" about Mr Corbyn and is "genuinely appalled" by his failure to deal with anti-Semitism within the Labour Party.

She doesn't give a clear answer on who voters would get as prime minister if they vote Lib Dem, though - given that it's unlikely to be her.

BBC Radio 5 Live

A little while ago we heard from Labour shadow justice secretary Richard Burgon who insisted Labour could still win the election on Thursday, despite polls showing a Conservative lead.

"We think we can and will win the general election on Thursday.

"People are frustrated after a decade of cruel Conservative cuts, people want something better."

Going on to mention the major speech the shadow chancellor will make today, he said: "the key point of John McDonnell’s speech today" is to explain how Labour would hold a Budget to end austerity in the first 100 days in office.

"It will start the process of bringing rail, mail and water into public ownership, ending the rackets, ending the rip-offs, ending the swindle."

He also said the party would kickstart a "green industrial revolution".

However, Mr Burgon could not give an exact timetable for when the party's plans to nationalise major industries would be completed when asked and admitted a Labour government may face legal battles.

He said: "It may be the case that this businessman or that businessperson or this rich corporation kicks up a stink about it and brings a case which I am confident we would then win."

Mike, from Weymouth, asks why the Lib Dems moved from their original position of another referendum to revoking Article 50 completely?

Ms Swinson, who's answering questions on the BBC News Channel and 5 Live, says the Lib Dems would still be "very happy" with a People's Vote.

"We obviously found ourselves facing a general election that might be last opportunity that people would have to stop Brexit... and we said that in the event, albeit fairly unlikely event, that the Lib Dems secured a majority government in that general election... then we would stop Brexit by revoking Article 50," she says.

"I think that's straightforward about what we would genuinely do in that circumstance."

She adds: "In the vast majority of circumstances it is unchanged: the Liberal Democrats want a People's Vote and we will work to secure a People's Vote."

Jo Swinson has begun her BBC election phone-in. Jan in Deptford asks the first question - what does she think national sovereignty is.

"I think it's important," she says.

"We have a United Kingdom that we can be proud of and I also think that we manage to do better for the things we want in this country if we work closely with other countries."

Ms Swinson is a committed Remain supporter and fears the impact of Brexit on the UK's place in the world.

Boris Johnson has been speaking to journalists at a fish market in Grimsby - the first stop on his tour of Brexit-voting Labour-held seats in Humberside and north-east England.

Asked how confident he is the Conservatives can take seats like these, Mr Johnson says his party is "taking nothing for granted" but has a "message of unity" which can bring the country together.

“If we can get Brexit done then we can move forwards with investments in infrastructure, education and technology that will unleash opportunity across the whole country," he says.

After a leaked document cast doubt on Mr Johnson's claim he can implement his Brexit deal by December 2020, external, the prime minister is challenged over whether he can guarantee the country will be ready to leave the EU.

Mr Johnson replies: “It’s a great deal that we’ve got, it’s a deal that nobody thought we could do… the whole of the UK can leave the EU - England, Scotland, Wales and Northern Ireland together.

“The deal we can do is going to be great for Northern Ireland and great for the whole of the UK," he adds.

Chris Morris
BBC Reality Check

As we reported earlier, a leaked document written by officials in the government's Brexit department and published in the Financial Times, external, has warned that Boris Johnson's aim to implement his deal by the end of 2020 presents a "major" challenge.

The argument we heard from Conservative minister Rishi Sunak was that Boris Johnson has defied expectations before by negotiating a new Brexit deal - and could do so again by securing a trade deal with the EU.

However, BBC Reality Check's Chris Morris points out that 90% of the prime minister's withdrawal agreement was exactly the same as Theresa May's deal - and the main changes concerning Northern Ireland have not gone down well there at all.

Chris adds that the process of implementing a new trading system unlike any which has been put in place before is "a big bureaucratic exercise" that will take time.

On Mr Johnson's insistence - reiterated by Mr Sunak earlier - that there will not be any checks for goods travelling from Northern Ireland to Great Britain under his Brexit deal, Chris says: "We didn’t really need a leaked Treasury document to tell us there will be checks between Great Britain and Northern Ireland because that’s what Mr Johnson’s own Withdrawal Agreement says."

The BBC's NI economics and business editor John Campbell has explored this issue further here.

Just a reminder that coming up at 09:00 GMT we'll have a special BBC News Channel and 5 Live phone-in with Lib Dem leader Jo Swinson.

We'll bring you snips and clips throughout.