A NSW Greens MP in danger of losing his endorsement in the next election amid allegations of sexual misconduct claims he is the victim of "trial by media" and a "determined smear campaign" by factional rivals.

Key points: The NSW Greens will vote this weekend on a proposal to remove Jeremy Buckingham from the party's Upper House ticket for the upcoming state election

The NSW Greens will vote this weekend on a proposal to remove Jeremy Buckingham from the party's Upper House ticket for the upcoming state election Mr Buckingham has repeatedly denied allegations about his conduct aired on the ABC

Mr Buckingham has repeatedly denied allegations about his conduct aired on the ABC An independent investigation into the alleged incident is still underway

In a leaked email to Greens members seen by the ABC, Jeremy Buckingham MLC lashed back at allegations on ABC's 7.30 program that he indecently assaulted former Greens staff member Ella Buckland in 2011.

Mr Buckingham denies the allegations and says two female witnesses corroborate his version of events.

"We should not allow trial by media or a determined smear campaign to overturn the outcome of a democratic preselection," Mr Buckingham wrote.

'I am not a pawn'

Ms Buckland told the ABC she was disgusted the NSW Greens would frame what allegedly happened to her as political.

Ella Buckland's complaint about Jeremy Buckingham is the subject of an investigation. ( ABC News: Dave Maguire )

"I am an autonomous woman and am not a pawn in some ridiculous factional game in NSW politics," Ms Buckland said.

The Greens have commissioned an investigation into Ms Buckland's complaint by an outside company, Workdynamic Australia, which is still underway.

NSW Greens will vote at a State Delegates Council meeting this weekend on a proposal to remove Mr Buckingham from the party's upper house ticket.

The motion, put by a member of the Macarthur branch, says: "This is to show our party's commitment to dealing with the allegations highlighted on the 7.30 report and to protect the reputation of the Greens NSW as a progressive, feminist organisation."

Independent investigation underway

In an email yesterday, Mr Buckingham urged NSW Greens party members to allow the investigator to make her findings before voting on proposals to remove him from the ticket.

"The executive officer of the NSW Greens indicated to me on Monday, July 30 that it was her understanding or impression that the allegations were not substantiated by the investigation," he said.

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"I understand that the NSW Greens have been in possession of a draft report from at least Tuesday, July 31."

The NSW Greens and the investigator have told the ABC the report is not completed.

Buckingham says dispute is factional

Mr Buckingham says in the email: "Respect for the basic principles of justice, including a presumption of innocence, are important to the Greens and a foundation of our society."

"It is crucial that the NSW Greens do not abandon these principles for factional politics," he said.

Mr Buckingham said he had been told that his factional enemy, Greens MP David Shoebridge, met with Ms Buckland around the time she made her complaint, in April this year, during the last preselection period.

"I also note that David Shoebridge's former staffer Tom Raue published a 290-word defamatory Facebook post only 3 minutes after the 7.30 program ended."

Mr Shoebridge told the ABC: "It is offensive in the extreme for anyone to classify women who bravely come forward and recount traumatic events seeking a just outcome as nothing but agents of a male politician.

"I thought we had moved beyond that, especially in the Greens."

'The investigation appears to have been bungled': lawyer

Ms Buckland's lawyer, Rory Markham, told the ABC that suggestions her allegations were motivated by factional politics were "ridiculous".

"Ella has concerns about members of both factions in the handling of her complaint," Mr Markham said.

"The investigation appears to have been bungled and appears to be dictated in timeframe by senior members of the Greens party.

"The concern that Ella has, is her only engagement [with the investigator] other than about her initial statement, was only triggered when an ABC journalist first contacted the Greens for comment.

"Of particular concern is Mr Buckingham's account of reassurances he has received about an investigative process that has not involved any production of draft findings to Ella, the principal complainant."

In his email, Mr Buckingham also took aim at the ABC, saying it was "improper and irregular that the ABC aired the allegations before they had assessed the findings of the independent investigation."

"It was extremely bad journalism, a seeming act of serious malice, and I will be making a complaint to the Press Council and assessing other legal options."

An ABC spokesperson said the ABC stood by the story, "which was clearly in the public interest".

"The story accurately reported on a range of allegations and its focus was on the processes within the Greens for handling them. This included allegations that the investigation into Ms Buckland's claims had been mishandled," the spokesperson said.

"The story stated that the events were disputed, and it included Mr Buckingham's response."

