Former Queensland premier Campbell Newman has shrugged off the significance of a meeting with One Nation's chief adviser, days after predicting the next government in the state would need to form a coalition with the Pauline Hanson-led party.

Mr Newman, who made history by losing the 2015 state election just three years after sweeping to victory in a landslide, has largely refrained from publicly commenting on state politics since returning to the private sector – until recently.

Speaking to Sky News on Monday, Mr Newman said the next Queensland election would be decided by One Nation, with polls showing voters are still undecided about both major parties, while support for Senator Hanson's party continues to grow.

"So the next government in Queensland will have to be a coalition government with One Nation," he said, adding that he believed Senator Hanson was an "older and wiser politician than 20 years ago".