"With polls showing Tony Abbott is likely to be Australia's Prime Minister it is essential to Abbott proof the Senate so that he does not get total control of the parliament," Australian Greens Leader Senator Christine Milne said.

"The Greens have an incredibly strong Senate team up for election including current sitting Senators Sarah Hanson-Young in South Australia, Peter Whish-Wilson in Tasmania and Scott Ludlam in Western Australia.

Australian Greens Leader Senator Christine Milne has used her speech at the Australian Greens campaign launch to warn of the risk of Tony Abbott taking control of both houses of parliament.

"Australian voters do not want any party to have absolute power in the parliament," Greens Leader Senator Christine Milne said.

"The last time this happened John Howard introduced Work Choices.

"We have a vision for our nation and the courage to stand up for issues that matter - something the old parties lack.

Supporters joined Greens Leader Senator Christine Milne, Deputy Leader Adam Bandt, Lead Senate Candidate Janet Rice and other candidates at Melbourne's Victorian Arts Centre to launch the Victorian Greens election campaign today.

Senator Milne outlined how the Greens were on track to secure a second Victorian Senate spot and retain Adam Bandt's seat of Melbourne.

The Greens also unveiled their first TV election advertisement ‘Standing up for What Matters'. It can be viewed here.

The Greens have joined Oatlands farmer Brett Hall to call on the government to stop shale gas and oil exploration in Tasmania.

"This is a dangerous industry that puts our precious water and farming land at risk," Australian Greens Leader Senator Christine Milne said.