If level-headed Oxford graduates are voting Green, what hope is there?

I’m disappointed that Ed Balls’s suggestion that the Office of Budget Responsibility should audit the parties’ manifestos was never taken up, not least because we will never know what Robert Chote thinks of the Green party’s claim that all its proposals are ‘fully costed’. Believe it or not, this includes the commitment to spend £45 billion on loft insulation in the next parliament.

It’s quite something, the Greens’ manifesto. No doubt you’ll have already read about some of their more reasonable measures — such as the ‘complete ban on cages for hens and rabbits’ and the insistence that ‘UK taxpayers’ money is not used for bullfighting’. But the sheer scale of their financial profligacy is breathtaking.

In total, the party estimates its proposals — which include doubling child benefit, jacking up the state pension to £180 a week and an extra £12 billion for the NHS — would increase public expenditure by £177 billion a year by 2020.