One Nation leader Pauline Hanson is set to announce she will put Labor last on her how-to-vote cards in four key government seats.
The move will boost Liberals chances of retaining the four seats, including Home Affairs Minister Peter Dutton in Dickson, The Courier-Mail reported on Monday.
"Peter Dutton has been one of the toughest ministers on border security and has worked constructively behind the scenes with my office on matters of national security," she told The Courier-Mail.
The other seats where One Nation will put Labor last are Petrie in northern Brisbane held by Luke Howarth, and Attorney-General Christian Porter's seat of Pearce and former SAS soldier Andrew Hastie's seat of Canning in Perth.
In 2016, One Nation placed sitting MPs last, which hurt the coalition and contributed to the LNP losing Herbert and Longman.
Prime Minister Scott Morrison earlier this year said the Liberal party would preference One Nation candidates behind Labor on its how-to-vote cards after the National Rifle Association scandal in the US.
The Adani coal mine issue had influenced her decision against Labor.
"Bill Shorten and Labor have made it very clear that the majority of their elected members want to shut down of our coal industry in Queensland and NSW which will leave tens of thousands of workers out of jobs and I won't support him on that decision."
Early voting starts on Monday.
