Palmer challenges PM to doorknocking comp

Palmer United Party leader Clive Palmer has challenged Tony Abbott to a doorknocking competition for the Canning by-election in Perth.

Clive Palmer (pic) has challenged Tony Abbott to a doorknocking competition for the seat of Canning. (AAP)

Clive Palmer has challenged Prime Minister Tony Abbott to a doorknocking competition during the Canning by-election campaign.

The Palmer United Party will announce its candidate in Perth on Friday for the West Australian seat, left vacant after the death of long-serving Liberal MP Don Randall.

Mr Palmer told reporters in Canberra on Wednesday he intends to spend at least six figures on the PUP campaign.