The Greens will push for a national anti-corruption body if there is a hung parliament after the July 2 election.
The minor party will also call for the end of corporate donations to political parties if it finds itself in a power-sharing arrangement.
"I think it's a possibility and the fact that it's a possibility means we should be talking about what the implications of that are," Greens leader Richard Di Natale told ABC radio on Thursday.
Prime Minister Malcolm Turnbull used Senator Di Natale's comments to warn that every vote counted on July 2.
The Greens leader was "warming up to submit his log of claims" on Labor leader Bill Shorten that would include weaker policies on border protection and higher taxes on business.
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"Who knows what would emerge from the chaos of an alliance like that," he told reporters in Geelong.
