What had been a pretty ordinary year for the Greens appears to be resolving to a happy ending, after the party's sweeping victory in Saturday's byelection for the Victorian state seat of Northcote.

The party now has raised hopes not just for the Queensland election on Saturday, but also -- if the grandiose projection of federal Greens leader Richard Di Natale is to be taken at face value -- for an eventual target of 25 House of Representatives seats a quarter of a century from now.