Voters in Western Australia look certain to be headed back to the polls for a re-run of the botched Senate election, after yesterday's determination by Justice Kenneth Hayne that "the only relief appropriate" was to vacate the original result.

Hayne's ruling also made it clear that a new election would proceed in the conventional manner, with all six seats up for grabs and a new nominations process open to all comers -- including any micro-party chancer hoping to follow in the well-publicised footsteps of Ricky Muir and the Motoring Enthusiasts Party, regardless of whether they have any actual connection to the state they aspire to represent.