tweets:, external By insisting he won't serve a 3rd term Cameron's making sure he serves a second without challenge. Clever #election2015

tweets:, external @BBCJLandale Cameron scoop shows it's much more effective in political interviews to treat leaders as human beings facing complex dilemmas.

LBC

Boris Johnson is asked about "equality before the law" and allegations of sexual impropriety. Why is it that politicians facing allegations of sexual impropriety aren't identified when media and celebrity figures are? Mr Johnson isn't convinced by that claim. He says the police need to get people coming forward and that's why they put names out there - but that it doesn't always work out. "It may sometimes turn out the allegations are completely unfounded, in which case people go through an awful lot of misery for no purpose."

David Cameron - huge over reaction by the media hype - an honest answer and what a sensible point to make. We all have our sell-by dates - the important point is never overstay your time. Well done Prime Minister.

David Wilkinson

Send us your comments to politics@bbc.co.uk and we'll put up a selection of them throughout the day.

tweets:, external George Osborne now 'too busy' to do an interview this morning on inflation. Now why would that be??

tweets, external: Thanks again 4 kind comments. To clear up: it was lettuce, not carrot; I did wash my hands & he meant big Shredded Wheat - think Botham

LBC

"To say he's arrogant or presumptuous seems to me to be totally bizarre. Actually I think he's being rather humble, rather straightforward and telling it like it is," Mr Johnson continues.

Image source, lbc

London Mayor Boris Johnson is currently doing his weekly phone-in on LBC radio. Unsurprisingly, the first question - from Andy in Dartford - is, what would you do differently as PM? He tries to dodge it, saying: "My job is mayor of London and I've got to get on with making changes in London." After a bit of haranguing from presenter Nick Ferrari, Boris declares the PM's announcement as "entirely banal and obvious".

BBC Radio 4 Today

The BBC's deputy political editor James Landale says he wasn't expecting David Cameron to give such a clear answer to his question about a third term. He tells Today that "it was not something planned" - this was not a pre-prepared message the PM wanted to get out, as some have suggested online. "I think he had in his head this idea he wanted to get out there that he would serve a full five-year term," he says. Countering Labour's idea that an EU referendum and then leadership election could lead to "chaos" might have been what Mr Cameron was driving at, but he went a little too far. "You sometimes catch the thoughts and the thinking that's at the front of their head, purely by a piece of luck and spontaneity." That is not great news for the PM or the party he leads. "The trouble is once you get into a debate and statement saying you'll serve the full five years, then you have to say what happens then, and that's where you get into trouble."

tweets:, external Can't help thinking that by naming Osborne, May & Johnson as potential successors, Cameron has almost ensured they won't be...

tweets:, external This is either a political mistake of epic proportions or Cameron sees some advantage that eludes everyone else.

Image source, PA

Ed Balls' pledge not to raise VAT in the next parliament has left the Conservatives asking how Labour would tackle the deficit - particularly given the party's support for £30bn of cuts. "Labour have let the cat out of the bag," a spokesman says. "Ed Balls is confirming his real plan - big hikes in the jobs tax or tax on hard work." In other words, the Tories think Labour would raise national insurance or income tax.

tweets:, external Hats off to Michael Fallon who finally crafts proper No 10 response after PM slip up with @BBCJLandale: arrogant of PM to say go on + on

Norman Smith
BBC Assistant Political Editor

No-one had the faintest idea Mr Cameron was going to say what he did.

Conservative cabinet ministers know this has the potential to be one humungous distraction. Up to now the Conservative campaign has been pretty disciplined, pretty focused on the economy. Now, inevitably, they face endless questions about Mr Cameron's intentions.

The real difficulty is this: it changes the atmosphere at Westminster. Once you start sketching out your political shelf-life, then people begin to speculate about life after you have gone.

BBC News Channel

A rather breathless Boris Johnson, back from his morning exercise, had this to say earlier about David Cameron's comments: "All he's saying is obvious and common sense. He doesn't want to go on and on and on like Mrs Thatcher. He's got five more years to complete the work of getting Britain's economic recovery on track and there's still a lot to do." But does that mean that Mr Cameron will stay on for the full five years? "Of course he's going to."

The Mirror

Kevin Maguire offers his take, external on the biggest political story of the last 12 hours: "The Tory leader's incredible blunder fired the starting gun for a Conservative bun fight to replace him." The Mirror's associate editor says the result is "permanent instability" should David Cameron win the 2015 election, he says. "One vote, two prime ministers."

Buzzfeed

Here's a sentence you probably weren't expecting to read this morning: decades of dancing have helped Vince Cable reach "international supreme" level, his dance teacher says. This is how Dr Cable spends his Friday afternoons, it turns out. He has passed every exam possible for an amateur dancer. It is all rather dizzying stuff, but there's some politics in Buzzfeed's article about the business secretary, external too. He is rather critical of Tim Farron's credentials as a future successor to Nick Clegg. "I suspect he would not be seen as a very credible leader," he says. Mr Clegg, of course, will be in the Commons later for what could be his last ever deputy prime minister's questions.

tweets:, external So: does Cameron's standing-down announcement look as bad for the Tories as it did yesterday evening? No. It looks even worse.

BBC Radio 4 Today

Some Tory backbenchers are deeply concerned about the possibility Britain's defence spending could slip below the 2% of gross national income target stipulated by Nato. "We have long-term commitments to our defence," Michael Fallon tells Today. He says the "10-year commitment plan" for future spending, David Cameron's pledge that the size of the regular Army will not be cut and the commitment to modernising the nuclear deterrent should all be of reassurance. But the final decision on spending for the bulk of the next parliament won't be taken until next autumn's three-year spending review, Mr Fallon accepts.

tweets:, external Both Michael Gove and Michael Fallon have said a Tory leadership race could run throughout 2020 while Cameron remains PM. Very American.