The Greens hope their Gabba Ward candidate Jonathan Sri could be Brisbane's first-ever Greens councillor, with long-serving Labor councillor Helen Abraham retiring today.

However the West End community development worker has tough political opposition to sway voters, despite working for almost two years and for South Brisbane for The Greens in the 2015 state election.

Greens mayoral candidate Ben Pennings, Gabba Ward candidate Jonathon Sri and Greens senator Larissa Waters. Credit:Tony Moore

Labor's new candidate to replace Ms Abrahams is Nicole Lessio, while the LNP is standing development officer and former national water polo champion Sean Jacobs, who lives at Kangaroo Point.

Nicole Lessio lives at Highgate Hill with her partner and four children and has gently stepped into Cr Abraham shoes over the past six months.