The leader of the National Party, Warren Truss, did not know Opposition Leader Tony Abbott had committed the opposition to supporting the government's attempt to boost party funding until the government released a letter bearing Mr Abbott's signature.

A package of reforms to political financing fell over last week after Mr Abbott pulled out of a deal negotiated between the Labor and Liberal parties citing the public's unhappiness with the proposed changes.

Mr Truss said although he was supportive of reforms to campaign finance it was an issue that needed to be explained to the community rather than being rushed through Parliament.

"There are plenty of defects with our current system," Mr Truss said on ABC television on Sunday morning.

"It would be better if there wasn't the perception in the public that those donations come with sort of hidden conditions or some kind of an anticipation of a policy direction."