The Greens are the latest party to rip up preference deals in several seats, on Friday announcing they would run a partially open ticket in 15 seats at the November 28 election.
Candidates will specify Greens first and One Nation last across seats including Albert Park, Essendon, Bendigo East, Mornington and Gippsland East, with constituents encouraged to otherwise preference according to their values.
That decision was met with outrage by Premier Ben Carroll's Labor Party, with Greens preferences historically helping the party over the line in key electorate battles.
"In one of the most consequential elections in Victoria's history, the Greens have done a dodgy deal to help elect a Liberal-One Nation government," a Labor spokesperson said.
Earlier this week, the Labor Party revealed it would not suggest an order of voting preferences in the key marginal seat of Prahran.
The seat is one of five inner-city seats the Greens have their sights set on.
"Labor is lying to Victorian voters," a Greens spokesperson said.
"After months of scaremongering about a Liberal-One Nation government, it is Labor who have done a dodgy backroom deal with the Liberals that could help elect one."
Labor preferences could be pivotal in allowing the minor party to win back Prahran, after Liberal MP Rachel Westaway narrowly gained control of the seat from the Greens at a 2025 by-election.
Most Liberal how-to-vote cards will preference One Nation above Labor, the Greens and the socialist parties.
However, the party is expected to preference Labor above the Greens in three key inner-city electorates which could hurt the Greens' chances of holding onto Richmond and Melbourne.
The premier was forced to defend his own chances of holding onto his seat of Niddrie, after shortened Sportsbet odds tipped the Liberals at $1.45 to claim the safe Labor seat compared to Labor's $2.80.
"I fight every day for my community, and they know it," he told reporters.
The premier and wife Fiona joined commuters on a Hurstbridge Line train to the safe Labor seat of Ivanhoe, where he promoted a $100 million pledge to double the frequency of train services across five different metropolitan railway lines.
Elsewhere, the opposition leader was rolling up her sleeves in the regions.
Travelling to Wodonga and the surrounding region on Friday, Ms Wilson held a press conference to announce funding to upgrade and duplicate a 1.7km stretch of Beechworth Road, located in the now-marginal Liberal seat of Benambra.
Labor's primary vote has slumped to 21 per cent while the coalition continues to grow its lead, rising to 32 per cent primary support according to a Lighthouse tracking poll from News Corp Australia's Growth Intelligence Centre.
The Australian Financial Review/RedBridge/Accent Research's latest poll pegged the coalition at 31 per cent, in front of Labor at 23 per cent, One Nation holding steady at 22 per cent and the Greens at 15 per cent.
Early voting opens from Wednesday.
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