Outgoing Labour MP Louisa Wall has fired another broadside at the Labour Party in her valedictory speech to Parliament this afternoon, ending a 14-year parliamentary career. 

Wall's exit from Parliament has been bruising for both herself and the Labour Party. 

After announcing her resignation as an MP a fortnight ago, it was revealed she would be taking a diplomatic post in the Pacific. 

But any pretence of civility between Wall and the Labour Party was shattered over the weekend when Wall did a round of interviews lifting the lid on years of conflict with her own party, which culminated in Wall being ousted as Labour's candidate in the safe Manurewa seat at the last election in favour of Arena Williams. 

On Thursday afternoon, Wall said she would address how she left Parliament. 

"Given the discussions surrounding my resignation from Parliament I have thought carefully about what is left to say in my valedictory statement," Wall said. 

She said she would speak about "highlights" and "acknowledge those who made things happen". 

"But there are a few things that I also feel I also feel I need to address given comments that have been made over the last few days." 

Wall said she was "forced out" of her electorate before the last election, "by the unconstitutional actions of the Party President, Claire Szabo, and some members of the Council [Labour's governing body)". 

"I was devastated," Wall said. 

"The President accepted a late nomination [from the current Labour MP in the seat, Arena Williams], did not share the fact of its late receipt with the Council until questions were asked and then retrospectively tried to justify and legitimise her actions," Wall said. 

She said the "devastation" was not just against Wall, but "about the devastation wrought on my Manurewa Labour Electorate Committee when their voting rights were removed to ensure that a central party vote would prevail". 

Wall said she was supported by "life members" of the party on her local committee, some who had served since Roger Douglas and later George Hawkins held the seat. 

Wall said she wanted to apologise to her local party members for the actions of the Labour Party against them. 

"The way they were treated in order to punish me is reprehensible. And it is as a result of that corrupt process that I am standing to deliver my valedictory statement today," Wall said. 

She said she agreed to leave Parliament in 2020, "because irrespective of the merits of challenging certain actions, being in a team where there is no appetite for your contribution, is not healthy". 

Wall said in 2020 she was "placed on the list just below where I had been in 2017 and accepted that [she] was to resign as an MP during this term". 

Wall thanked colleagues Michael Wood, Nanaia Mahuta, and former MP Tim Barnett for their "integrity in assisting in the process of reaching an agreement". 

She stood giving her valedictory "fulfilling [her] part of the agreement", Wall added. 

"But I do want to be very clear that this was not entirely my choice". 

The journey to marriage equality was "a rapid-fire course in process and procedures" - and despite it being included in the Labour manifesto, it was not universally supported in caucus, Wall said. Even the deputy leader at the time was not entirely supportive. 

"It was during this journey that I experienced most acutely how personal politics can override kaupapa. 

"For me, the debate around marriage equality was rooted in basic human rights principles. 

"How could the state deny the rights of a group of people to enter into the state-recognised institution of marriage," Wall said. 

Wall said "one regret" was that the party and Parliament had not been able to recognise Māori as tangata whenua in the Constitution Act. 

Wall said she could not get support for this through caucus, and she was directed to withdraw a Member's Bill to this effect from the Member's Ballot before the 2020 election. 

She had been able to raise issues of "housing, period poverty, FGM, surrogacy, alcohol policies, early childhood education, revenge porn, safe zones, and protections of journalists' sources". 

Wall said her "commitment to human rights" will be uppermost in her mind as she moves into a new role as an Ambassador for Gender Equality in the Pacific. 

She also thanked her family: "While there have been obstacles to face and overcome, I leave knowing that I did what I could within those constraints," she said. 

"To use a sporting analogy, I left it all on the field." 

Ardern 'didn't want me in Cabinet' 

Wall had earlier described the Manurewa episode as "unforgivable". 

"I can't not say it affected me and I can't say it wasn't traumatic," Wall said. 

"But it didn't just affect me. It actually affected the lives of a whole lot of other people." 

She later told TVNZ's Q+A Prime Minister Jacinda Ardern had said directly Wall would "never" be a Minister under her leadership. 

Wall said she had been on the outer edges of the Labour Party because she backed David Cunliffe for leader in the past. Ardern, and her ally Grant Robertson had been staunch members of the ABC (Anyone But Cunliffe) faction. 

"I'm not a minister because the Prime Minister told me I would never be in her Cabinet. And that was her decision, obviously, and I accepted that decision and then just got on with the job," Wall said. 

"There were messages, probably not so subtle, that it wasn't just she didn't want me in her Cabinet – she was also very clear that she didn't want me in her caucus. Again, you're going to have to ask her about why she thought there was no place for someone like me in the Labour Party caucus." 

Wall told the Herald that MPs sometimes had to pick a team. 

"Sometimes you make a decision really early and then that's it," says Wall. 

"I've always tried to just get on with my job and be part of the team but it's very hard to be part of somebody's team if they don't want you to be part of their team or if they exclude you." 

Wall has had a storied parliamentary career. In 2013, her Member's Bill legalised same-sex marriage in New Zealand. This year Wall used another Member's Bill to create "safe areas" around abortion clinics. 

Wall has given conflicting accounts of what to expect from her valedictory. 

She told Newstalk ZB's Mike Hosking there would not be any fireworks: "It will be full of the people I've worked with. 

"None of this could have happened without the people that have been the champions, like Dame Margaret Sparrow who's coming to my valedictory." 

But Wall told TVNZ's Breakfast the speech would be an opportunity to have "clarity" and to "put some things on record that I think need to be known".