Once close political allies, Mr Ingerson last month lodged a formal complaint against Ms Chapman, accusing her of warning a new employer that he was “untrustworthy”.

Ms Chapman who has placed second on the list has been an MSP since the last parliamentary elections in 2021 and, before then, she was co-convener of the Scottish Greens from 2013-2019. 

Currently the party leader in Aberdeen and Aberdeenshire, Mr Ingerson is also co-convener of the party’s LGBT+ wing, the Rainbow Greens.

Green activist Guy Ingerson (Image: supplied)

In April, Ms Chapman narrowly survived a bid to oust her from Holyrood's equalities committee after she criticised the judiciary over a judgement on the definition of a woman.

Ms Chapman, deputy convener of the Holyrood committee, said there was "bigotry, prejudice and hatred" coming from the Supreme Court after it ruled a woman is defined by her biological sex under the Equality Act.

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The Scottish Greens regional candidate lists come as the party is currently in the process of electing new co-leaders. 

Patrick Harvie has announced he will not run for leadership again, however, his co-leader Lorna Slater has made her bid to be re-elected for the top position. 

MSPs Ross Greer and Gillian Mackay are also standing for the leadership contest which is expected to conclude at the end of August.

The Herald understands nominations for leadership will close on Friday this week. 

Unveiling their Holyrood candidate lists at midday today, the Scottish Greens also revealed Ellie Gomersall, who is linked to a group critical of the current party leadership known as the 'Glasgow faction', has placed second in Glasgow, behind leading candidate Mr Harvie.  

Cllr Holly Bruce placed third and Green activist Iris Duane came fourth. 

Critic of the current Green co-leaders, Niall Christie, who The Herald revealed was suspended from the party amid complaints of bullying, described Ms Gomersall and Iris Duane as “excellent candidates”.

Mr Christie previously urged Mr Harvie and Ross Greer to stand aside for "radical women" even if fellow members gave them top ranking in the race for candidates on the regional lists. 

For the newly-created Edinburgh and Lothians East region, the former head of [[Edinburgh]] Rape Crisis, Mridul Wadhwa, placed seventh with current co-leader Lorna Slater leading the list.

The former rape crisis chief, backed to stand by the Rainbow Greens, was criticised in a damning  independent report for failing to “understand the limits of her authority” and was found to have “failed to set professional standards of behaviour”. 

Announcing their candidates today, the Scottish Greens have said they are aiming to return a record number of MSPs come Holyrood 2026. 

Seat projection analysis from an Ipsos poll at the start of this month indicated that the Scottish Greens could secure 16 MSPs, nearly doubling the eight elected in 2021.   Reacting to the candidate announcements, Scottish Greens Co-Leader, Lorna Slater MSP said: "Next year’s election is pivotal for the future of Scotland and our planet, that’s why I am delighted that Scottish Green members have selected such a strong group of lead candidates who will deliver real change in Holyrood.

“Greens have been the only influential left-wing force in the Scottish Parliament for decades, delivering free bus travel for young people, scrapping peak rail fares, and securing tax reforms to ensure the richest in society pay their fair share to support the services we all rely on, like our NHS. 

“With more Green MSPs, we can continue to push for the climate emergency to be taken seriously by other parties who want to protect corporate profits rather than our planet, and to fight back against the toxic climate change denialism from the far-right. Scottish Greens won’t give up on our planet’s future.

“Electing a record number of Scottish Greens is the only way to secure the pro-independence majority in Holyrood, and to continue advancing the case to re-join the European Union. It is a cause that Scottish Green MSPs will continue to make on the doorsteps across the country and in the chamber at Holyrood.”