In a resolution unanimously adopted by the state executive,the NSW Nationals also agreed to ban any party member from joining alt-right groups Squadron 88,The Lads Society,The Dingoes,New Guard or the Antipodean Resistance.
Deputy Prime Minister Michael McCormack,the federal Nationals'leader and a NSW MP,pledged an ongoing investigation into members'alleged links to white supremacist groups or neo-Nazi circles.
"We are glad the investigation was handled quickly and effectively,but will not rest until every last one of these extremists have been identified and removed from the party,"Mr McCormack said.
State director Ross Cadell said he was"certain"the party had identified all the alleged radicals,but told Fairfax Media:"Who knows who will try and join tomorrow ... vigilance is ongoing."
The party did not release the names of the 22 people hit with the lifetime ban and Mr Cadell declined to confirm the names of anyone on the list.
On Wednesday,a group of 15 former members resigned,led by Clifford Jennings,who was elected to the NSW Young Nationals'executive earlier this year after recruiting enough new members to stack out the election. Another four people have also resigned during the course of the investigation.