Legislative Assembly · District of Nepean
Sianan Healy
Last verified 29 Sept 2026
Seat context — Nepean›
Nepean is a Liberal-held Mornington Peninsula seat that had an eventful year. Sam Groth, who won it in 2022 with 48.1% of first preferences and 56.4% two-party-preferred against Labor's Chris Brayne, resigned on 13 February 2026 citing public pressure on his family during a defamation dispute. At the 2 May 2026 by-election, which Labor did not contest, the Liberals' Anthony Marsh won with 38.7% of first preferences and 63.2% to 36.8% against independent Tracee Hutchison; One Nation's Darren Hercus polled 24.5% and the Greens' Sianan Healy 9.4%. The 2026 field so far is four candidates: Marsh, Hercus, Healy and Family First's Mike Brown; no Labor candidate is listed and Hutchison does not appear on The Tally Room's list. The Tally Room says the Liberals are favourites to retain the seat.
Background
Platform
Where they stand, issue by issue — grounded in 2026 Victorian polling, not assumed. Every position is tagged with how we know it.
Climate action and environmental protection, social justice, and cost-of-living and housing affordability.
"I will be a representative that engages with and fights for all of our community in Nepean."
What Victorians say matters most
5 poll-led issuesCost of living and crime have ranked 1st or 2nd in every Victorian poll since mid‑2025, with debt and housing close behind — see schema §3 for the polling this grouping is based on (DemosAU, Ipsos Issues Monitor, Roy Morgan). The 0-10 'priorityScore' on each candidate's issue entries is NOT a measure of true importance or an independent ranking of what a candidate actually cares about. It reflects how much detail and specificity exists in what that candidate has actually said publicly on that issue -- a named policy mechanism and a verified voting record score higher than a one-line stated priority, regardless of the issue's real-world weight. Render this distinction in the UI wherever the score appears; do not label it just 'Priority' without the qualifier.
Cost of living
Names community struggles with cost of living as a priority.
The Greens' platform, as summarised by the Australian Election Tracker, would make public transport permanently free and freeze rents for two years; nothing is attributed to Healy personally.
Crime and community safety
The Greens' platform, as summarised by the Australian Election Tracker, would raise the age of criminal responsibility to at least 14; nothing is attributed to Healy personally.
Housing affordability and supply
Names housing affordability as a priority.
The Greens' platform, as summarised by the Australian Election Tracker, would build 88,000 public homes with $4 billion initial investment.
State government debt and fiscal management
The Greens' platform, as summarised by the Australian Election Tracker, would raise land tax to 5.3% for investors with $5 million or more of residential property; nothing is attributed to Healy personally.
Infrastructure and public transport delivery
The Greens' platform, as summarised by the Australian Election Tracker, would make trains, trams and buses permanently free; nothing is attributed to Healy personally.
Also on the record
6 substance issuesThese don't top “biggest issue” polling, but carry real 2026 policy weight and genuine differences between parties.
Education and training
The Greens' platform, as summarised by the Australian Election Tracker, would reinstate $2.4 billion in delayed public-school funding; nothing is attributed to Healy personally.
Health and healthcare access
Leads a non-profit focused on women's health and equitable healthcare.
The Greens' platform, as summarised by the Australian Election Tracker, would fund 500 more psychologists and psychiatrists.
Urban planning and housing density
Not detailed in sources reviewed.
Climate and energy transition
Names climate action and environmental protection as priorities.
The Greens' platform, as summarised by the Australian Election Tracker, would reach 100% renewable electricity by 2030 and ban new coal and gas projects.
Treaty and First Nations affairs
The Greens' platform, as summarised by the Australian Election Tracker, would back the Statewide Treaty Bill without amendment; nothing is attributed to Healy personally.
Regional and rural Victoria
Not detailed in sources reviewed.
Local & party context
2 fieldsNot scored the way the eleven issues above are — these are fixed facts about the seat and the party, not positions with more or less emphasis behind them.
Her priorities sit within the Victorian Greens' statewide platform. SSelf-stated — GREENS-HEALY-PAGE, ET-GREENS-POLICYAustralian Greens Victoria, "Sianan Healy"View sourceAustralian Election Tracker, "Greens policy profile — 2026 Victorian election"View source
No point of divergence was found.
Track record & prior candidacies
She was the Greens' candidate at the 2 May 2026 Nepean by-election, receiving 3,805 votes (9.4%). VVerified — WIKI-NEP-BYEWikipedia, "2026 Nepean state by-election"View source
Her Greens profile does not distinguish the by-election from the November general election.
She is not among the candidates in the 2018 or 2022 Nepean results; the Greens' candidates were Paul Saunders (12.0%) in 2018 and Esther Gleixner (8.8%) in 2022. VVerified — WIKI-NEP-RESWikipedia, "Electoral results for the district of Nepean"View source
Campaign, money & endorsements
Campaign logistics
Endorsements & Donations
Per the Victorian Electoral Commission's funding guidance (vec.vic.gov.au, accessed 2026-09-29 via search snippets of its independent-candidate and registered-party funding pages), a candidate is eligible for public election funding if they receive at least 4% of first-preference votes in their contest, or are elected. Funding is reimbursed against an audited statement of campaign expenditure, and advance funding must be repaid in full if the threshold is missed.
Healy polled 9.4% at the May 2026 by-election, above the 4% mark, so that campaign qualified for public funding. The Greens' 2022 Nepean candidate polled 8.8%.