WA Labor leader Mark McGowan has sought to capitalise on Liberal Party turmoil, holding a campaign-style launch in Dean Nalder's seat of Alfred Cove to showcase the ALP's candidates.

Addressing the Labor faithful, Mr McGowan said the events of the last few days showed the Barnett Government was a "hopeless rabble" which had "lost the right to govern".

"Today the Government is fighting with itself, WA Labor is fighting for the people of Western Australia," Mr McGowan said.

"This is turmoil at the heart of the Western Australian Government.

"Is it any wonder our unemployment rate is out of control, our health system is in disarray, our finances are shot, when you have a government at war with itself?

"We have policies and ideas. All they're doing is tearing one another apart.

"The Government has lost the right to govern. Their behaviour is unacceptable.

"On the other hand WA Labor is united, we have a great team, we have great policies for the future.

"WA Labor is ready for government."

Labor used the event to showcase key candidates, including Lisa O'Malley in the seat of Bicton, which the Liberal Party holds with a notional margin of 10 per cent.

Mark McGowan (centre) with candidates and supporters in Alfred Cove. ( ABC News: Rebecca Carmody )

It also unveiled another health policy — to build so-called Medihotels alongside tertiary hospitals as a way of freeing up hospital beds.

Labor describes the facilities as specialist, purpose-built hotels, used to support patients who have been discharged from hospital but who are still recovering and require monitoring.

If implemented today, Labor claims its plan would free up 54 tertiary beds in 2017–18.

Mr McGowan said Labor would release more information closer to the election, including the number of proposed Medihotels and their locations.

Labor's Upper House candidate Alannah MacTiernan was at the launch to warm up the crowd.

"My God what a contrast, here we have a team that is absolutely united behind our leader … while the other side, unfortunately for the people of Western Australia, are falling apart," she said.

"Mark McGowan has managed for over 12 months to be rated as the preferred premier. Now that is an absolutely exceptional achievement.

"There's not too many leaders that will go into the contest with that."