It is often said that one of the hallmarks of the Conservative party is its ruthlessness when it comes to ditching leaders who are regarded as having lost the winning touch.
It is this supposed instinct for survival that did for Lady Thatcher back in 1992. The current bout of turbulence within the party has inevitably led to speculation about whether, if he cannot pacify his critics, Mr Cameron could be heading for the exit door rather sooner than when voters go to the polls in 2015.
I am not sure. He is certainly having a rough time and perhaps the worst aspect of his troubles is that he looks like he is constantly on the back foot and rather reluctant to take on critics of his policies.
What is fascinating is that danger faces him on two flanks. Thatcher had to contend largely with a disgruntled Parliamentary party and notwithstanding the poll tax row, had a generally loyal following out in the constituency associations. Mr Cameron has contrived to upset both MPs and grass roots activists and it is hard to fathom who is more annoyed.
This doubles the jeopardy: MPs harbour grievances over lots of policy issues, many of which are of little interest to their rank and file activists. However, both the EU and gay marriage are agitating both camps which means Cameron is getting flak from all sides. And then there is the lurking threat of UKIP - seen by some as more Conservative than the Conservatives
After coming close to losing control of Kent County Council, several Conservatives confided that they felt that making Mr Cameron leader had proved a disastrous mistake and they wished David Davies had got the job.
That, of course, is the beauty of hindsight but their incandescence at being led by someone who they feel has trampled all over traditional Conservative values was palpable.
Whether all this will lead to the party deciding that it is time to dump DC is anyone's guess. Europe remains a Conservative faultline and always will be.
The difficulty of Cameron's pledge to hold a referendum on the EU is that it is contingent on him winning an outright majority and not many Conservatives see that as happening.
But you do sense that there has been a serious fracture in the relationship between the leader and his party which could ultimately see the party deciding they have had enough.
If the sense that he won't produce a clean win in 2015 grows, the party might just throw their weight behind someone who it thinks could.
UKIP will become the official opposition at Kent County Council on Thursday - historic for the reason that with 17 members, it has broken the three party stranglehold from a standing start.
Here is the shadow cabinet team:
Roger Latchford: Leader
Zeta Wiltshire: Deputy leader
Finance: Jeff Elenor
Mike Baldock: Transport + Environment
Chris Hoare: Corporate and Democratic Services
Hod Birkby: Economic Development
Mo Elenor: Adult Social Care
Adrian Crowther: Education and Health Reform:
Bob Neves: Community Services
:Frank McKenna: Commercial and Traded Services
Adrian Crowther who defected from the Tory group at County Hall and regained his Sheppey seat is an interesting choice for education. He has already spoken out about Conservatives trying to lure him back to the Tory fold.
What is the future for Kent County Council's locality boards, set up barely two years ago? The answer: they don't have one, at least not in their current format.
An edict has gone out that all future meetings of these boards - one for each district - are suspended until a "review" has been carried out. A review that is certain to conclude they should be scrapped.
This is interesting in as much as they were ostensibly designed to devolve decision-making to local groups of county and district/ borough councillors - in line with the grand "localism" project beloved of Mr Pickles and the DCLG. In reality, they didn't actually take decisions - leading to complaints they were simply talking shops.
These boards were inevitably packed with Conservatives when set up but clearly that would have had to have changed given the council's new political make-up.
We are sure the two are unrelated.