Controversial crossbench MP Bob Katter could be thrown out of Parliament at the next election as Labor weighs up whether to deprive him of crucial preferences following his embrace of incendiary anti-immigration politics.

Mr Katter, who has held the far north Queensland seat of Kennedy since 1993, recently endorsed as “absolutely magnificent” a speech by Senate colleague Fraser Anning that called for a “final solution” to immigration and a return to the white Australia policy.

Labor's long-standing decision to preference Mr Katter over Liberal-National Party rivals has been crucial to his longevity in Parliament. But growing concerns about the 73-year-old's behaviour have left Queensland Labor figures increasingly open to switching the preference order and accepting Kennedy's probable return to the Coalition.

Queensland independent MP Bob Katter has relied on Labor preferences to win his seat. Credit:Alex Ellinghausen

Mr Katter told Fairfax Media he would react forcefully to any adverse Labor decision, warning: "Anyone who wants to fight, bring it on."