Nadine Dorries' curriculum vitae is everything David Cameron says he wants to encourage in the "modern, compassionate Conservative Party".
The Tory MP for Mid-Bedfordshire was for many years a nurse in the NHS; she is a Liverpudlian, comprehensive-educated, and grew up on a council estate.
Perhaps that is part of the reason so many were offended on her behalf when David Cameron described her as "frustrated" – and then sat down, giggling, amid gales of laughter from other male MPs.
Although the charge against Cameron was one of condescension to a woman (for which he later apologised), others on the Conservative benches interpreted it as "the worst of the Bullingdon [Club]". This remark encapsulated what a large number of Tory backbenchers feel: that their leader is still at heart the Old Etonian upper-class bon vivant, disconnected from the concerns of the working families.
It is in this context that the departure of Liam Fox has a social as well as a political fall-out. Fox, like Dorries, is from a family that first acquired a home directly as a result of Margaret Thatcher's "right to buy" for council-house tenants.
State-educated, and a graduate of Glasgow Medical School, Dr Fox was widely seen as the purest example of the Thatcherite spirit in David Cameron's cabinet.
Yet although Fox himself was not the leader of any faction within the Conservative Party, there are many – not least among the new 2010 intake – who can be described as "Thatcher's children". Like her, they identify with the middle classes and see those interests as inseparable from the interests of the nation as a whole.
They were inspired by her example of meritocracy and share her contempt for the old social elites, which they regard as decadent and even unpatriotic (Fox would emphasise this by wearing Union Jack cufflinks, which one
can't imagine Cameron doing except as a publicity stunt).
Although Thatcher herself rarely gave public vent to these emotions, it was illuminated in a television interview with Sir Anthony Parsons, who recorded her saying to him: "Do you know, Tony, I am so glad that I don't belong to your class."
When Parsons asked "What class would that be, Prime Minister?" she retorted: "The upper-middle class who can see everybody's point of view but have no view of their own."
In a sense, that was the charge Dorries had been laying against Cameron. There are others, much more influential than Ms Dorries, who share this opinion. Graham Brady, the articulate chairman of the 1922 committee of Conservative backbenchers, Andrew Tyrie, the forensically bright chairman of the House of Commons Treasury Committee and John Redwood, whose online diary is required reading among the Tory grassroots, are all of this view.
Like many of their colleagues, they were appalled by Cameron's scrapping of the traditional Tory support for selective education within the state sector. The way they see it, the privately educated coterie around Cameron – who could easily afford to send their children to eye-wateringly expensive independent schools – were shockingly indifferent to the value (socially as well as financially) of grammar schools to the aspirant lower-middle classes.
In the spirit of Thatcher's remark, such Tories wonder what David Cameron really believes in, other than a natural right to rule.
It was The Economist that best captured this objection, just before the general election: "Mr Cameron epitomises British elites: he understands his high-earning peers and feels a genuine noblesse oblige towards the poor, but the people in between are somehow beyond his ken."
It is fair to say the Tory leader is desperately concerned about this impression being given. In the televised general election debates between the party leaders, he was embarrassingly insistent on portraying his family as "ordinary".
Yet Cameron went too far for his old acquaintance from Brasenose College Oxford, Toby Young, when he described himself and his wife Samantha as from the "middle-classes": "Hang on a minute. Cameron was educated at Eton and is reportedly worth £30m. His wife is the daughter of a baronet and the stepdaughter of a Viscount. If they're 'middle class' what does that make me?" Toby should know it is not done among the upper-classes to describe themselves as anything other than middle-class.
More to the point, Cameron does show signs of understanding the day-to-day concerns of those who have to scrape to get by. That is my take on his decision last week to infuriate the health lobby by not acceding to their demand that we follow the Danes with a special tax on "unhealthy food".
If there was one thing which would have condemned Cameron as out of touch with "ordinary people", it would have been a levy on hamburgers and chips.
For similar reasons, the Tory backbenches regard as politically suicidal the idea of new "green" taxes on fossil fuel consumption (beloved of the Liberal Democrats). Thus, Nadine Dorries let rip on Conservative Home website at the weekend: "No mother will forgive Cameron if she is unable to provide the Christmas she wants for her children because of a Conservative 'green' agenda... No 10 needs to talk to the Sally Websters in Coronation Street as much as it does the modern-day Lady Mary in Notting Hill.
"As a working-class northerner I can assure you that just about every woman north of the Watford Gap takes huge exception to both men and women with plummy accents and Savile Row suits dictating policy which affects their lives.
"It's a northern thing. We don't trust people who talk posh and we are utterly repelled by arrogance."
Dorries also observed: "Women are good at revenge, a dish best served cold."
David Cameron has just been served with double helpings – and there may be plenty more where that came from.Reuse content