Isabel Hardman

On the surface, Jeremy Corbyn's pitch to become caretaker prime minister of a government of national unity after overthrowing Boris Johnson looks like a messy failure. The Liberal Democrats have said they won't back him, two of the Tories who he wrote to have backed away too, and the Independent Group for Change (which he didn't write to) have said this evening that they will 'not support nor facilitate any government led by Jeremy Corbyn'. Instead, everyone is talking about the possibility of a government led by Ken Clarke. The former Tory chancellor today said he wouldn't object to taking over if it was 'the only way' to stop a no-deal Brexit.

Is Philip Hammond's intervention today really a problem for Boris Johnson? The former Chancellor comment piece in the Times declares that he's kept quiet for all of three weeks, but that 'now it is time' to speak out and warn the new Prime Minister that he risks betraying the British people if he goes for a no-deal Brexit. There has been a sufficiently energetic response from Number 10 sources to suggest that they are rattled by Hammond. But those sources insist that everyone in Westminster had already priced in such a complaint, and that the public will see Hammond and his acolytes bickering over process and trying to stop Brexit, which will just make voters more enraged with the Remainers in parliament.

He might be the only MP to have accidentally posted a screenshot of emails about 'GE2019' on Instagram, but Damian Hinds is far from the only one spending their summer planning to fight in a poll later this year. All the parties are gearing up for a campaign. We've even had glimpses of how Boris Johnson would fight such an election, with today's ComRes poll for the Telegraph suggesting that 44 per cent of voters would back Boris Johnson if he suspended parliament to get Brexit done. There are quibbles about the way the questions were asked in this poll, but it's an important one because it chimes with the thinking in Downing Street about how to win a 2019 snap poll. Johnson will pitch himself as the man of the people fighting a recalcitrant parliament that's actively blocking Brexit.

Usually after a big government reshuffle, the happiest-looking people are the ministers, whether they’ve survived the axe or are celebrating a promotion. But at the end of this week, the most cheerful MPs appear to be the ones who left government, whether of their own volition or after being sacked by Boris Johnson. They’ve been spotted at the cricket and are happily announcing their holiday plans with their family on social media in a way that most politicians shy away from, for fear of appearing to have too much fun. But who is really in the best situation: those in the government, or those now on the outside? In my column in today’s Guardian, I examine the emotional turmoil that many MPs on both sides are going through.

Ben Wallace also has an Iran-shaped problem in his Defence in-tray. One of the complaints about the British government's handling of the tanker crisis is that the Navy's capacity is too thin. It is a long-established complaint from defence chiefs that there isn't enough money for the Armed Forces, and they are now expecting Johnson to show his true blue Tory credentials by turning on the spending taps. Jeremy Hunt pledged during the leadership contest to double defence spending, and there has been a regular drumbeat from Tory backbenchers on the need to push spending up. The Joint Committee on the National Security has warned that 'the cornerstones of UK national security are being undermined' and that the Nato target of spending two per cent of GDP on defence might not be enough.

Boris Johnson will now be receiving plenty of unsolicited advice about how to be Prime Minister. As his victory speech a few minutes ago showed, though, he's not planning to ditch one of the qualities that got him into this job in the first place. Brand Boris isn't about the typical prime ministerial behaviour, stood squarely behind a lectern and trying to offer gravitas. To try to squeeze Johnson into this mould would be about as successful as Gordon Brown's attempts to look cheerful. That's why his speech was based around the acronym 'DUDE' - Deliver Brexit, Unite our Country, Defeat Jeremy Corbyn and Energise.

Sir Alan Duncan's resignation will only leave a hole in the Foreign Office for a couple of days before the new prime minister replaces him. But he's not the only missing minister in that department: Mark Field is suspended while the incident at Mansion House is investigated. Duncan had been covering some of Field's responsibilities over the past few weeks, and now he is off too, just as the crisis in relations with Iran deepens. Jeremy Hunt, meanwhile, has been busy conducting a leadership campaign, all of which gives the Foreign Office, normally the most composed and regal part of Whitehall, a slightly chaotic, neglected feel.

Tom Watson has had more reinventions than Kylie Minogue has had mid-performance outfit changes. His performances over the years have ranged from baronial backroom fixer loathed by Blairites to scourge of Fleet Street when he took on Rupert Murdoch. There was a brief counter-culture period when he went around wearing a beret, a foray into hunting down alleged paedophiles, and a mysterious vanishing act when he realised that Jeremy Corbyn's fans were out to get him. In the magazine this week, I look at where Watson's latest incarnation is taking him: he's the key figure in the latest attempt to save the Labour Party from Jeremy Corbyn and his hard left allies. As I say in that piece, Watson these days is a kindly man who many MPs - to their own great surprise - look to for help and support.

Ever since Jeremy Corbyn was elected as leader of the Labour party, many of his MPs have dreamed of deposing him. They’ve tried mass shadow ministerial resignations, a no-confidence motion, even a formal leadership contest — but to no avail. Some, like Chuka Umunna, left the party, hoping (in vain) that others would join their breakaway group. Other MPs gave up hope, resigned and found jobs outside of politics — concluding no plot would ever work. But that might now be changing. The Corbynites, who have stuck together for so long, are fighting with each other. Party members, once the human shield who protected their leader, are beginning to doubt him.

Today's Prime Minister's Questions provided a rather dispiriting summary of the current political scene. The two leaders of the main political parties ended up having a fight on whose party had the bigger racism problem, sparked by tweets from the US president telling black and minority ethnic Congresswomen to 'go back'. Jeremy Corbyn tried to open the session on climate change, but Theresa May had, unsurprisingly, turned up clutching the advert placed by Labour peers in today's Times, which said Corbyn had 'failed the test of leadership' because of his attitude to anti-Semitism. And so the exchanges moved to a predictable format.

Tonight's Sun debate between Boris Johnson and Jeremy Hunt was far more relaxed than last week's head-to-head clash. But it was also stuffed with news lines, as both men prepared for the final few days of voting in the Tory leadership contest. Both declared the Northern Irish backstop dead, Johnson ruled out an election before Brexit happens, and they both attacked Donald Trump for telling black and minority ethnic congresswomen to 'go back'. On Brexit, the answer that Johnson gave about the backstop showed how likely it is that he might pursue a no-deal Brexit: he rejected a time limit or unilateral exit clause.