It was probably a mistake as all Conservative policies are kept secret from the electorate.
I cannot believe they have not worked out their policies, so it is extremely odd that they do not want to tell us what they are.
It could be that they are frightened about Labour stealing their policies, but that doesn't really stand up, as the Government's programme is outlined in the Queen's speech.
Or, it could be that they do not want their policies scrutinised and debated, like they are being now with this 10% reduction in spending.
And that is why the Tories have been very poor in opposition. An effective opposition not only tells us when the Government have got it wrong, but they should also tell us how they would do things differently.
This failure makes them look weak. That is why, despite everything that has happened to Gordon Brown over the past year, Cameron is unable to deliver the winning punch during PMQs.