Greens MP Adam Bandt is poised to become the next leader of his party, after Richard Di Natale announced he was leaving politics to spend more time with his young family.

The ten-member Greens party room will meet on Tuesday morning in Canberra to elect a new leader. Mr Bandt, the party's only lower house MP, was the sole nominee for the role on Monday evening, with senior Greens sources confident he had the numbers to win.

Adam Bandt, right, wants to run for the leadership on the Greens, replacing Richard Di Natale, centre. Credit:Alex Ellinghausen

However, while co-deputy leader Larissa Waters and Tasmanian senator Nick McKim quickly ruled themselves out of the contention on Monday, high-profile South Australian Senator Sarah Hanson-Young did not respond to requests for comment by deadline. Late on Monday, NSW Senator Mehreen Faruqi said she was considering nominating for an undefined "leadership role".

Both the leader and co-deputy leader positions became vacant after Senator Di Natale called time on more than four years as the parliamentary leader and nearly ten in federal politics.