07/05/2016 1:57 PM AEST | Updated 28/09/2016 10:00 PM AEST

Greens 'Have Never Been In Better Shape' For Election Campaign

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MELBOURNE, AUSTRALIA - APRIL 30: Australian senator and greens leader Richard Di Natale delivers a speech during a protest demanding that asylum seekers held in off shore detention to be brought to Australia at a rally in Melbourne, Australia on April 30, 2016. Protests have started after The Papua New Guinean Supreme Court ruled that the Australian-run detention centres on Manus Island were illegal and unconstitutional. (Photo by Asanka Brendon Ratnayake/Anadolu Agency/Getty Images)

The Greens will relish the upcoming election campaign and are confident in picking up a number of lower house seats, the party's leader Richard Di Natale says.

Speaking on Saturday, Di Natale said he was feeling very good about the campaign, describing the Greens as a "genuine opposition" for a more compassionate and decent society.

"The Greens are ready to go," Di Natale told reporters.

"We've never been in better shape and this campaign here in Victoria will present our best result ever. We have a wonderful prospect in a number of lower house seats, we have some of our terrific candidates behind us."

His comments come amid speculation that Prime Minister Malcolm Turnbull will announce a July 2 federal election on Mothers' Day.

News Corp Australia reports that the PM is tipped to visit Governor-General Peter Cosgrove on Sunday afternoon where he will formally call the election.

Earlier this week, Turnbull said that he would confirm the election “before the 11th of May and it’ll be on the 2nd of July”.

Di Natale said the Greens would be the only party with a serious plan to tackle global warming.

"During this election campaign, we will be the only party standing up for strong action on dangerous global warming because, if we don't, we risk losing the Great Barrier Reef, those incredible Tasmanian forests, we risk losing some of Australia's most precious natural heritage," he said.

"But not just for those reasons, because tackling dangerous global warming and transitioning to the clean energy economies are a huge opportunity to create new jobs, bring in international investment and get the Australian economy humming again.

"We've got to stop looking at action on dangerous global warming as simply a cost."