Election 2016: Budget warning grows amid black hole bickering
![Treasurer Scott Morrison says the size of the black hole is not so important after miscalculating it on Tuesday.](/content/dam/images/g/n/h/x/x/z/image.related.afrIndexLead.320x210.gp3jqd.png/1464164180112.jpg)
A top budget economist has called on both sides of politics to urgently have their costings vetted by the independent Parliamentary Budget Office to provide voters with a realistic view of the risks facing the budget.