The ABC has demanded an explanation from Pauline Hanson's One Nation Party after its reporters were blocked from attending election celebrations on Saturday, describing the move as an attack on independent media.

ABC reporters were locked out of a West Australian election night event in Perth, as a controversial preference deal with the Liberal Party and Senator Hanson's comments on vaccinations and praise for Russian president Vladimir Putin saw One Nation's message all but drowned out.

Other journalists, including a reporter from Fairfax Media, were allowed to attend the event, prompting ABC editorial director Alan Sunderland to ask why his staff had been singled out.

In a statement on Tuesday, Mr Sunderland said party officials had claimed all media had been treated appropriately, with a pool camera arrangement for TV crews in place inside the function.