Billionaire Clive Palmer's fledgling party could secure a WA Senate seat with as little as 3 per cent of the primary vote, analysis shows.
There are 27 parties on the metre-long WA Senate ballot paper and 12 have placed the Palmer United Party ahead of the Liberals, Labor, Nationals and Greens in their preferences.
Katter's Australian Party is put ahead of the four major parties on the preferences of 13 micro parties.
Using ABC election analyst Antony Green's Senate calculator, _The West Australian _found that PUP candidate Zhenya Wang could get the fifth of six available seats with just 3 per cent of the vote.
PUP's political fortunes rely on the complex arrangement of preferences that apply to all votes cast above the line on the Senate ballot paper.
By harvesting preferences from other minor parties, PUP or KAP may stay alive long enough in the proportional representation count to claim a Senate spot.
At the 2004 election, Family First's Steve Fielding won a six-year term in the Senate despite getting less than 2 per cent of the primary vote in the Victorian Senate count, thanks to a swag of preferences, including from Labor.
The Greens' Scott Ludlam would appear to need at least 10 per cent of the primary vote to remain safe while only a collapse in Labor's vote will prevent its number two candidate, Louise Pratt, from retaining her position.
The draw of candidates on the Senate ballot paper is also causing concern in the Liberal Party because it may end up benefiting the Nationals.
The Liberal Party is furthest to the right on the ballot but the similarly named Liberal Democrats are second reading the ballot paper from left to right.
"The Liberal Party is concerned that some voters may mistakenly vote for the Liberal Democrats thinking it is the Liberal Party," Liberal State director Ben Morton said.
"It is not the Liberal Party, and voters should follow the Liberal Party how-to-vote card very carefully if they want to vote for the Liberal Party. "If they vote for the Liberal Democrats, their vote will go to a large number of other parties before landing with the Liberal Party, if at all."
About 95 per cent of people are expected to vote above the line on the Senate ticket, rather than number candidates' boxes from one to 60 below the line, as would be required in WA.If a voter puts a 1 in the Liberal Democrats box above the line, the vote will eventually flow to the Nationals, ahead of the Liberals.