The man dubbed "the preference whisperer" says the result for micro parties in the West Australian election has been "fabulous".

At least one WA micro party looks set to win an Upper House seat in the state election, after a deal struck by Glenn Druery.

Labor claimed a landside victory on Saturday but analysts predict it will be dealt a hung Upper House with preference deals working to the micro parties' advantage.

Five micro parties struck a deal that allowed them to form blocks to preference each other, which boosted their chances of winning.

It is firming up to have worked for the Liberal Democrats.

The Daylight Saving Party and Flouride Free WA got close, but the numbers were still being counted.

Mr Druery said the reaction from the micro parties was fantastic.

"They're over the moon," he said.

"But as I said to them, winning is the easy part — sitting there and actually achieving things in the next four years, that's the hard bit."

Mr Druery denied the preference deal left voters confused as to where their vote was actually going and said it was fair.

"In a word it is very fair. As I say, it gives small parties, independents and ordinary people an opportunity to enter the process," he said.

Upper House challenge ahead

Political analyst Dr Martin Drum said the primary vote for the micro parties likely to win was "really quite appalling, quite low".

"But because of the way the preferences flow in our Upper House here in Western Australia you still can't write off all of those parties," Dr Drum said.

Political analyst Martin Drum said the Labor Party could be in a difficult position in the Upper House. ( ABC News: Andrew O'Connor )

"It depends on who is excluded first and where their preferences go."

Dr Drum said Labor would have some challenges ahead when the Upper House was confirmed.

"Whilst Labor's position has improved, they won't control the Upper House even with the Greens so it will still be a hung Upper House," Dr Drum said.

"They're still going to find some difficulty in passing legislation."

As it stands, nearly 50 per cent of the Legislative Council vote has been tallied.

The ABC predicts WA Labor will win 15 seats, Liberal Party will take nine, the Nationals could lock away four and the Greens have a chance at three seats.

One Nation is unlikely to have the success that was widely predicted and may only win one, or possibly two seats.

The Shooters, Fishers and Farmers Party could win up to two seats.

Greens MP Lynn MacLaren was waiting for the result of her seat in the Legislative Council but said if elected she wants to change the voting system so the preference deals would not have such a big impact.

Out-going Greens MP Lynn Maclaren was hopeful she would retain her South Metropolitian seat. ( Supplied )

"I am hoping that in this election, because of the focus on preferencing and micro parties, that the Government takes a real serious look and fixes it and gets rid of ticket voting," Ms Maclaren said.

"That would help democracy in Western Australia."

Results are expected to take a number of days to finalise.