The decision of nine Conservative MPs elected in 2010 to stand down suggests many fear defeat - and makes it more likely.
The Prime Minister will make a statement in the Commons later today as parliament returns after recess and the coalition continues this morning negotiating how to widen anti-terror laws.
The PM declares that the "root cause" of terrorism is the "poisonous ideology of Islamist extremism".
Had the PM refused to promise a referendum, he would likely have been deposed as Conservative leader.
The PM is not alone in failing to articulate a clear set of principles for this new era.
The people’s representatives should be able to exercise their democratic role, whether it is convenient for the prime minister or not.
The awareness that the party’s contradictions will not be resolved by Cameron explains the yearning for a new chieftain.
One of the questions facing David Cameron as he returns from his holiday.
GDP may be rising, but wage growth is at its lowest level on record. There is no recovery for most voters.