What happens when there are no policies to fight over
When Labour was relieved of all its ideological baggage, more than ten years ago now, part of the plan was that it would now be united. Since the Party for nothing, there would be nothing to cause splits. What now splits Labour is the visceral loathing between Brownites and Blairites. Whichever of these two are in charge, the policies that will be pursuied are the same, but the viciousness of the tribal war between them is as great, perhaps greater, as when the Party has policies to fight over.
The simple fact is that the "Brown must go" agitation really is a Blairite ramp, and they don't give a bigger if they put Cameron in charge of the country, so long as they defeat the hated Brownites. They want this, not because it will change anything in the real world, not because it will change the lives of a single person in Britain, but because they want their tribe to triumph and the other tribe to be humiliated.
The simple fact is that the "Brown must go" agitation really is a Blairite ramp, and they don't give a bigger if they put Cameron in charge of the country, so long as they defeat the hated Brownites. They want this, not because it will change anything in the real world, not because it will change the lives of a single person in Britain, but because they want their tribe to triumph and the other tribe to be humiliated.