Clive Palmer cancels Press Club speech

A spokesman said Mr Palmer was suffering "flu-like symptoms" and had received medical advice not to travel.

"It is hoped Mr Palmer's address will be rescheduled for another time prior to the federal election," the spokesman told AAP.

Mr Palmer is the United Australia Party candidate for the Senate in Queensland, with his party seeking seats in the upper and lower house at the upcoming federal election.

Last election he spent more than $80 million on advertising, which is expected to be replicated in the lead up to the 2022 poll.