Clive Palmer says it's not up to the major political parties to dictate who is allowed a voice in the Australian Senate, while simultaneously denying one media outlet its voice at a press conference.

Mr Palmer flew into Perth on the same day Western Australia's governor was declaring April 5 as the date for the re-run Senate election, which nearly delivered the Palmer United Party a senator in September.

Dio Wang was elected, then denied by the bungled recount, which led to the High Court ruling that WA had to go back to the polls.

And announcing Mr Wang as the party's number one candidate again - alongside former AFL footballer Des Headland and academic Chamonix Terblanche - Mr Palmer said the time was right for WA to have a major role in Canberra.

"This is a unique time in Western Australia's history to put WA in the balance of power in the Senate," Mr Palmer said.