Greens confident as election underway

The Australian Greens are confident they will steal votes from both major parties, as the federal election campaign kicks off.

Greens leader Bob Brown says people are disenfranchised from the major parties due to their lack of action on climate change.

"Somebody said last week that the Greens are more Labor than Labor, more Liberal than the Liberals and unsurprisingly greener than both," Mr Brown told Sky News.

"That's a pretty good accolade, I think it sums it up," he said, referring to voter sentiment.

The party is hoping to pick up seats in both the upper and lower house, to add to its current representation of five senators.