Amber Rudd is leading the 'Stop Boris Johnson' campaign as Tory moderates move to block hard Brexiteers from the party leadership.

Work and Pensions Secretary Ms Rudd, along with former minister Nicky Morgan, is spearheading a group of 70 Conservative MPs seeking to keep former Foreign Secretary Mr Johnson from the top job.

The moderates' so-called 'One Nation' wing hopes to act as a 'powerful counterweight' to the hardline Brexiteers in the European Research Group, the Sunday Telegraph reported.

Leading Brexiteer candidate Dominic Raab was also on manoeuvres this weekend, setting out a plan to tackle rising knife crime in Britain.

And Chief Secretary Liz Truss set out her stall in a major interview, telling the Sunday Times the Conservative Party must 'remodernise' and cut taxes.

Amber Rudd is relaunching the One Nation faction inside the Tory party as moderates move to block Boris Johnson and hard Brexiteers in the race for power

Liz Truss (left in Westminster on Friday) today called for the Tory party to remodernise, while Dominic Raab published his plans to tackle knife crime

The manoeuvers emerged today as it was claimed Mrs May wants to drag the contest to October in an effort to stop Mr Johnson getting into power. Whoever wins the Tory race will also become Prime Minister

Ms Rudd is working to revitalise the One Nation Group of Tory MPs which dates back to the 1950s.

She is looking to thwart Mr Johnson who she once said 'could not be trusted to take you home at the end of an evening'.

The Work and Pensions Secretary is defending a tiny minority in her Hastings constituency - but could either run her own campaign or act as kingmaker for another candidate.

High profile members of the One Nation Group also include Business Secretary Greg Clark, Justice Secretary David Gauke, Scottish Secretary David Mundell, energy minister Claire Perry, as well as Damian Green and Sir Nicholas Soames.

Mr Johnson did win an unlikely vote of confidence from Tony Blair, who called the Tory MP a 'formidable campaigner' who would pose a powerful challenge to Labour at a general election.

Meanwhile, in an article for the Sunday Telegraph, Mr Raab sets out how he would go about tackling the blight of knife crime - one of the main domestic issues Mrs May has faced during her premiership, besides Brexit.

Mr Raab's focus on knife crime will be seen as a challenge to Home Secretary Sajid Javid, who on Sunday announced new measures in the effort to tackle the problem.

The MP for Esher and Walton has also attempted to outflank hostile competition by addressing allegations that he used a non-disclosure agreement, also known as a 'gagging order', to silence a former colleague who accused him of bullying.

Mr Raab told The Sunday Times the claims were 'completely false', while his allies suggested they were being deployed as part of a 'smear campaign'.

Ms Truss, who backed Remain in the referendum and was previously in charge at the Ministry of Justice and Defra, picked out cutting taxes for businesses and stamp duty for young home buyers as key policies in a Sunday Times interview.

She also appeared to be keen to show that she has a sense of humour, joking about a 2014 speech in which she branded Britain's cheese trade deficit a 'disgrace' that led her to be ridiculed online.

She told the paper: 'Sometimes politics can be in danger of being managerial. The Conservative Party needs to remodernise. We need to be optimistic, aspirational. We need to participate in the battle of ideas. We haven't been doing.'

In the backdrop to the contest, Conservative chairman Brandon Lewis has told friends that if Mrs May survives the coming weeks, then Downing Street hopes to delay the final stages of the contest until the Tory conference in September.

The hope is it will deprive Mr Johnson of an immediate 'Brexit bounce' if Britain has left the EU this spring.

Allies of Mrs May believe that a long contest would offer the best chance for the leadership to skip a generation, allowing a 'dark horse' candidate such as Tom Tugendhat, James Cleverly or Mark Harper to surge through the ranks.

THE FAVOURITE: Boris Johnson has three times the support of his closest rival in leadership polling. But the darling of the party faithful has an uphill struggle convincing MPs to put him to the membership

THE RUNNER: Michael Gove is running everyday, and not just to be Prime Minister. The Brexiteer believes he is the only one who can see off hardliners and unite remainers

THERESA IN TROUSERS: Jeremy Hunt (left) is seen as a safe pair of hands but other MPs worry he is a bit too boring. He needs to move fast to shake the comparisons to Theresa May's cautious steady-as-she-goes style. THE KARATE KID: Dominic Raab (right) is a Brexit purist but risks putting off more moderate MPs with his hardline Brexit stance. Clean cut with a black belt in Karate, his good looks hide a ruthless streak

Under the plan, the leadership contenders would parade their wares to the party faithful before a final vote by the Tory membership. It would also, they believe, allow Mrs May to be given a 'dignified' send-off by the party.

No 10 is furious about the leading role played by Mr Johnson and fellow Brexiteer Dominic Raab in opposing Mrs May's deal – until they performed a U-turn in Friday's vote.

A friend of Mr Lewis said: 'By the time we reach the autumn, everyone will be heartily sick of hearing Boris and Raab banging on about Brexit, and will be in the mood for a new face – or at least a more acceptable one such as [Foreign Secretary] Jeremy Hunt.'

A Eurosceptic source said: 'If they try this there will be a riot. Whoever takes over will need a decent run-up to the Brexit trade negotiations, to have the right team in place and devise a clear and coherent strategy'.

Who's the real top dog in the Gove household? Michael Gove's wife Sarah Vine has lifted the lid on the real battle to be top dog – the one raging in their home. Like the Tory Party leadership contest, this battle erupted last week after bichon frise Snowy got top billing by being pictured on their doorstep next to would-be Prime Minister Mr Gove. Gove's dogs Muffin, Monkee and Snowy (left to right) But as columnist Ms Vine revealed on Twitter, that only provoked the couple's other two pets. 'Muffin and Monkee say why is Snowy getting all the attention – look how damn cute we are,' she tweeted. Advertisement

The main leadership contenders – Mr Johnson, Mr Hunt, Mr Raab, Home Secretary Sajid Javid, Environment Secretary Michael Gove and Chief Secretary to the Treasury Liz Truss – will tomorrow step up their courting of Tory MPs.

It has been claimed that Mr Hunt is the frontrunner, with between 75 and 100 MPs 'in the bag', followed by Mr Gove with between 40 and 50 MPs.

However, both men privately dispute the figures and a poll in today's Mail on Sunday by Deltapoll shows that former Foreign Secretary Mr Johnson is almost three times as popular as his nearest rival. Claims Mr Johnson has pledges of support from 80 Tory MPs have been dismissed by his camp as 'well wide of the mark'.

It comes as the Cabinet contenders all unveiled their operations, with MPs starting to openly declare to each other who they are backing.

Mr Johnson's key allies Conor Burns and Jake Berry have been joined by Brexiteer hardliner Simon Clarke.

Mr Gove's campaign is being aided by Pensions Minister Guy Opperman and Treasury rising star Mel Stride.

Mr Javid, who is said to be struggling to drum up significant levels of support, is being backed by Treasury Minister John Glen and former Minister Robert Halfon, a university friend.

Mr Raab has support from Brexit Minister Chris Heaton-Harris and former whip Sir Robert Syms. He has also hired two of Mr Gove's former special advisers, Beth Armstrong and James Starkie, to boost his office staff.

THE SAJ: The Home Secretary is said to be struggling getting support from colleagues after a choppy few months. He as an amazing backstory, but MPs fear he's not ready

Meanwhile Mr Hunt's camp includes Steve Brine, who resigned last week in protest over Brexit, former Cameron-era Minister Philip Dunne, and junior Government aide Alan Mak.

Mr Hunt's status as frontrunner last week came under sustained attack from rival camps which have nicknamed him and Mr Javid 'The TiTs' – short for Theresa in Trousers.

One Minister said: 'We let the managers have a go last time and that went well. It's time for someone with a bit of flair.'

Iain Duncan Smith the VERY unlikely soft-top heart-throb Iain Duncan Smith's arrival to see Theresa May at Chequers in his £25,000 Morgan 4/4 last week made headlines and turned the former Tory leader into an unlikely heart-throb. Iain Duncan Smith pictured in his £25,000 Morgan 4/4 'He's been getting fan mail from middle-aged women all week asking for a ride,' a Commons source said. It is not the first time IDS's soft-top motor has hit the headlines – we first revealed his 'Mr Toad' look, below, back in 2003. Advertisement

And another branded Mr Hunt 'a Diet Coke version of Theresa May'.

Mr Hunt was by far the most active candidate last week, addressing MPs on Monday, followed by a wide-ranging midweek interview.

This weekend he tried to burnish his 'statesman' credentials with an article in the Washington Post newspaper in which he defended Britain's presentation in the foreign media as a crime-ridden dystopia mired in political chaos.

He wrote: 'Please put aside the doom-laden commentary and accept my assurance: we British are neither abandoning our neighbours nor retreating from the world.' He was also seen wooing Amber Rudd at the expensive Corinthia Hotel off Whitehall, and The Mail on Sunday has learned he offered to make her his replacement as Foreign Secretary if he won a leadership contest.

However, Ms Rudd's wafer-thin majority in Hastings would make extensive international travel a tough ask. Their breakfast plotting came as Ms Rudd, who many Remain-backing MPs want to run herself, emerged as a powerful 'kingmaker' figure.

Remainers and left-wing Tories will today launch a new 'Compassionate Conservative' group, to counter the Brexiteers. The 40-strong body will be headed by Ms Rudd as well as other 'wets' Damian Green, Nicky Morgan and Sir Nicholas Soames.

The group will seek to hold their own leadership hustings and rally behind a single candidate with the best hopes of defeating a Brexit hardliner from the European Research Group. Meanwhile, Mr Raab has been warned he will lose if he becomes the 'poster boy for the ERG'.

Remainers and left-wing Tories will today launch a new 'Compassionate Conservative' group, to counter the Brexiteers. The 40-strong body will be headed by Amber Rudd as well as other 'wets' Damian Green, Nicky Morgan and Sir Nicholas Soames

One MP said: 'There is so much anger in the party at the behaviour of the nutters, that anyone who gets their backing en masse is f***ed.'

Allies of Mr Gove say his pitch to the MPs will be that he is the only Brexiteer who can unite the party – as it is highly likely a Remain-supporting candidate would be trounced in a vote of party members. Yet Mr Gove has proven with his support of the PM that he is not a hardliner.

A source said: 'Michael is the only one who can beat the ERG out there in the country and stop us becoming a far-Right party.' Mr Gove and Mr Javid were spotted have lunch together on Thursday in the House of Commons, with both camps dismissing reports that Mr Gove could endorse Mr Javid. A source in the Gove team said: 'More like the other way round.'

Mr Javid would be a powerful endorsement for any frontrunner, but after a series of gaffes he is failing to attract the levels of support he might have hoped for. One MP said: 'It's always buddy this and buddy that, but I'm not sure he's got what it what it takes to win people over.'

Last night luxury bookmakers Fitzdares told The Mail on Sunday that the firm was yet to receive a single penny in bets on favourite Michael Gove – and that all the flutters on Boris Johnson had come from females.

CEO Will Woodhams said: 'Someone asked for odds on Winston Churchill's grandson Sir Nick Soames, saying 'only a Churchill can sort this mess out'. We gave him 250/1.'