Katter's Australian Party and Pauline Hanson's One Nation Party have struck a preference-sharing deal ahead of the Queensland state election.
The minor parties will put each other second and the Greens last on their how-to-vote-cards for the October 31 poll.
It's understood that KAP and One Nation will preference either Labor or the Liberal National Party differently across individual electorates.
KAP state leader Robbie Katter says the minor party preference deal was a response to the major parties neglecting regional Queensland.
"For far too long the major parties have continued to sell off our assets, pushed green ideology and failed to invest in regional job-creating mega-infrastructure projects," he said in a statement on Thursday.
"Queensland can't afford another four years of major party dominance, we know it doesn't work, enough is enough, time's up."
Mr Katter took aim at the LNP's decision to preference Labor last in every seat, saying the strategy risked the Greens picking up more seats in parliament.
He said more Greens MPs would damage the mining economy and lead to job losses in the state's north and west.
"Up here in the north the LNP they say they are pro-coal, yet down in Brisbane they tell everyone they are anti-coal," Mr Katter said.
"The truth is they are preferencing the Greens and they can't have a bet each way."
KAP currently hold Treager, Hill and Hinchinbrook by comfortable margins, but will mount strong contests in the marginal Labor seats of Thuringowa, Townsville and Mundingburra.
One Nation holds Miran but hopes to pick up Labor-held Maryborough, Keppel and the LNP-held Lockyer.
The party's preferences will also be crucial to the outcomes in Townsville and Mundingburra.
About 3.3 million Queenslanders go the polling booths on October 31.