Very very roughly, the scenarios suggest that this might be true - ie Ed Balls might be right - if the economy is actually in a downturn.

BBC: IMF report on UK makes for unhappy reading

It would be misleading to suggest that there is widespread unhappiness in Liverpool with Ed Miliband's leadership - or that conference delegates wish David was their leader instead.

BBC: Labour conference: David Miliband back in spotlight

The argument, put forward by energy secretary Ed Davey among others, went on to suggest the subsidy loading would increase by a factor of as much as ten.

BBC: Scottish independence: Priorities and powers