A One Nation candidate receiving Liberal preferences in the West Australian election once advocated killing Indonesian journalists, and attacked "poofters", Muslims and black people on his now-deactivated Twitter account.

Richard Eldridge, a real estate agent contesting an upper house seat in the South Metropolitan region of Perth, called Muslims "little sheet heads", derided gay relationships as "poo games" and advocated taking up arms against "extreme Muslims".

Richard Eldridge is running for the West Australian upper house in the southern metropolitan area of Perth. Credit:Facebook

In one extraordinary rant about Indonesians in November 2013, Mr Eldridge said we should "Balibo" Indonesian journalists, an apparent reference to the 1975 murder of the Balibo Five group of Australian journalists in Timor.

"The only real thing Muslims are good at is multiplying but that is all they need to do history will show," he tweeted. "Let's hunt down some indo reporters and balibo them. What's Suharto up to these days.