Support for Turnbull is at its lowest since he grabbed power in a party-room coup in September 2015 and party disharmony has been magnified as voters abandon the mainstream amid a resurgence among far-right parties such as One Nation.
Senator Hanson insisted the media was covering up the extent of the One Nation vote, saying her party had already picked up three seats, and "possibly another two".
In the end, One Nation's assault on WA was a complete and utter shambles.
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QUT political science Professor Clive Bean said while the party would be disappointed with that result, Queensland remains a strong state for One Nation, and it couldn't be written off for the upcoming Queensland election. The WA Electoral Commission has not yet announced the result of any seats, but has Pauline Hanson's One Nation Party reaching or nearing quota in the Agricultural, and Mining and Pastoral regions.
"The Labor voters that wanted to vote for us they said, 'oh no we want Colin Barnett gone, ' it was all about Colin Barnett, they wanted him gone".
Senator Hanson believes the preference deal was a lead cause of One Nation failing to meet expectations and polling less then 5 per cent of the statewide vote on Saturday.
Prime Minister Malcolm Turnbull is facing pressure in the party room to write off any future deals with One Nations following the Liberal's crushing defeat in the Western Australian election at the weekend.
"This should serve as a clear warning to Tim Nicholls and the Liberal National Party that people will not accept politicians who are more focused on doing sneaky preference deals than on actually delivering for Queenslanders", Ms Trad said in a statement.
"This has certainly halted the sense of momentum building around One Nation that has been there since July a year ago", said Associate Professor Haydon Manning, a political scientist at Flinders University.
One source noted the preference deal could only have been struck in WA - where the Liberal and National parties are not in a formal alliance - and said it could have made a difference to the result if the election were closer.
However Mr Nicholls repeated his party's commitment to preference at the next election on a seat-by-seat basis.
Hanson, who is wary of foreign investment and wants to suspend Muslim immigration, said late on Saturday the deal was a mistake. We've just got registered and we got 50 candidates to stand.
- with Matthew Knott and Fergus Hunter.