As Business Secretary Greg Clark discusses his energy price cap on Today - more very shortly on that - how might it actually work? 

Our personal finance reporter Brian Milligan has some ideas.

Today Programme
BBC Radio 4

Image source, PA

When Theresa May and Jeremy Corbyn take part in a Question Time special six days before the election, they will appear one after the other, rather than face off in a debate.

Reflecting on the programme's usual format and this particular edition, presenter David Dimbleby says the audience of 150 members of the public - chosen to represent a cross section of society -usually provides a "very effective" vehicle for examining what politicians put forward. 

He also looks ahead to tonight's One Show, which will broadcast an interview with Theresa May and her husband Philip. 

It's an invitation which has also been extended to Labour leader Jeremy Corbyn and his wife Laura Alvarez.

The Spectator

We understand the energy price cap policy isn't universally popular within the Conservative Party, and the Spectator magazine, a Tory backer in general, is certainly unimpressed., external.

Matthew Lynn calls it "an alarming example of Mrs May’s left turn", arguing: "There are so many ways in which the price cap is a genuinely terrible idea that it is hard to find space to list them all."

He says there's nothing wrong with wanting to help those struggling to get by, but better ways would be a cut in the standard rate of income tax or abolishing the green belt to give a boost to house building.

"Or indeed almost anything - because anything would be better than a throwback to the economics of 1970s South America, which is all that seems to be on offer in this general election."  

Peter Henley
Political editor, South of England

Labour has expelled three members in Jeremy Hunt's constituency. 

They were trying to persuade the Surrey South West Party to back the candidate from the National Health Action Party. 

The three include the constituency Labour Party secretary and a member of 46 years standing.

The Green Party has already vowed to stand aside for NHA candidate Dr Louise Irvine and the Lib Dems are expected to follow suit. They're trying to unseat Mr Hunt and overturn his 28,000 vote majority.

That's the view of Business Secretary Greg Clarke on Labour's proposed energy freeze in 2015.

He says prices actually fell after it was announced and so the plan would have left people paying more than they needed to.

Mr Clark says he's hasn't switched his energy supplier because it's "quite a hassle to do so".

"It shouldn't be necessary to go through the fuss to avoid being ripped off," he adds.

In other Labour news, Jeremy Corbyn has suggested he will remain Labour leader whatever the result on 8 June.

Speaking to Buzzfeed while out campaigning in Leamington Spa, external, Warwickshire on Monday, he said: "I was elected leader of this party and I’ll stay leader of this party."

He also coined a new moniker, quipping in response to criticism of his leadership that "Monsieur Zen is fine."

Today Programme
BBC Radio 4

The Tories say their cap could save customers up to £100 a year, but energy industry representative Lawrence Slade says he could save a customer "much, much more" than that with a simple trip to a price comparison website.

Today Programme
BBC Radio 4

Lawrence Slade, chief executive of trade organisation Energy UK, says the Tory energy cap assumes the market is "static" and that "good things" aren't already happening.

"Things are changing very swiftly... and I worry that a price cap could have serious unintended consequences," he tells Today.

It could actually reduce competition, discourage new suppliers from entering the market and reduce the number of different tariffs available, Mr Slade argues.

"I want to see a market that supporters competition and works for customers."

Image source, Reuters

Jeremy Corbyn will say the issue of whether Brexit happens or not has been "settled" as he formally launches his party's general election campaign later.

Theresa May has attempted to portray the general election as being about Brexit, urging voters to strengthen her negotiating hand, but Mr Corbyn will insist "the question now is what sort of Brexit do we want?"

In his speech, the Labour leader will promise to protect "Britain's vital industries" after the UK has left the EU.

In Manchester, he will tell supporters they have "four weeks to transform Britain" until the election on 8 June.

Image source, British Gas

The Conservatives' election pledge on energy bills would see a cap on prices for people on what are known as "standard variable rates".

Those are the ones often criticised by industry watchdogs as bad deals for consumers.    

The cap would be set by regulator Ofgem.

Theresa May says she wants to end "rip-off" bills in a market which is "not working", but the energy industry opposes the move, arguing it would see bills rise as companies clustered their prices towards any cap on tariffs.

Labour called the plan "desperate stuff", and said what people really want isn't a maximum amount that can be charged, but a simple promise that bills won't go up year on year.  

A helpful reminder of what Ed Miliband said in his 2015 manifesto about energy prices.

In case the text is hard to read, it promised to "freeze energy bills until 2017, ensuring that bills can fall but not rise, and we will give the regulator the power to cut bills this winter".

Image source, Reuters

Norman just pointed out that the Conservatives are fighting the election as "Theresa May's party". Well, yesterday we got that message loud and clear at a campaign event. 

Norman Smith
Assistant political editor

The proposed limit on energy bill tariffs is broadly similar to Labour's 2015 manifesto pledge, but it is a cap, not a freeze and a regulator would administrate it, not politicians. 

Theresa May is presenting herself as a "red Tory", someone who'll stand up for ordinary working families that might have previously looked to Labour to support them. 

Good morning and welcome to today's election coverage. Coming up: 

• The Conservatives pledge to introduce a cap on energy bill tariffs in their manifesto. 
• Jeremy Corbyn will officially launch Labour's campaign in Manchester, saying a Labour government would "provide for the many not the few".
• Lib Dem leader Tim Farron will be campaigning in the south west of England.
• And the Green Party is setting out its policy on health.