West Australians have been urged to ignore "fringe dweller" candidates at the re-election of the state's Senate seats.
Deputy Liberal leader Julie Bishop and Defence Minister David Johnston launched the Liberal Party election assault on Friday, after April 5 was named as the date for the historic re-run of WA's Senate election.
Senator Johnston, who will again be the number one candidate on the Liberal's ticket, said the new poll would be a chance for WA to voice their displeasure at the carbon and mining taxes.
And Ms Bishop urged voters to turn away from minor parties if they wanted to ensure a strong voice for the state in Canberra.
"What we need to do is ensure there is a strong representation from WA inside the government - Labor senators can't deliver that, minor parties can't deliver that, fringe dwelling parties can't deliver that," Ms Bishop said.
"The minor parties can create chaos, but they cannot deliver the positive changes that Western Australia needs."
Ms Bishop said she was expecting to see some effect of election fatigue in WA, whose voters will have been to the polls four times in just over twelve months following the new election.
"We did not ask for this election, and we did not seek it. The only people calling for this election were the Greens," Ms Bishop said.
"The circumstances are unfortunate, and regrettable but we have no choice but to go to the electorate."
Michaelia Cash, Linda Reynolds and Slade Brockman comprise the rest of the Liberal ticket.