Special Minister of State Gary Gray has committed the government to try to pass sweeping electoral reforms through Parliament by June 30, altering the rules for this year's election.

The reforms would mean that the sources of many more donations would have to be publicly revealed after the poll.

Special Minister of State Gary Gray. Credit:Alex Ellinghausen

Mr Gray told The Age he was ''absolutely confident'' the reforms - including lowering the threshold above which donations must be disclosed, subsidising political parties and independents for their administrative costs, and toughening the electoral law - can be passed.

The government has a bill before the Senate to require disclosure of all political donations of more than $1000 - compared with the present disclosure level of more than $12,000. This legislation has passed the House of Representatives.