Nationals MP Andrew Gee has announced his resignation from the party and will sit in federal parliament as an independent.
Mr Gee, who represents the NSW seat of Calare, said he was leaving the junior coalition party after its decision to oppose the Indigenous voice to parliament.
"I can't reconcile the fact that every Australian will get a free vote on the vitally important issue of the voice, yet National Party MPs are expected to fall into line behind a party position that I fundamentally disagree with and vote accordingly in parliament," he said in a statement.