State party leaders have exchanged barbs as two key seats hang in the balance of a dual by-election.
Up for grabs are the seats of Werribee in Melbourne's west and Prahran in the city's inner southeast, following the resignations of long-time treasurer Tim Pallas and Greens MP Sam Hibbins.
At a voting centre in Wyndham Vale on Saturday, Premier Jacinta Allan touted her government's living cost support measures and called the opposition divided after a December leadership spill.
"When you have a divided Liberal Party, a Liberal Party that don't trust each other, Victorians can't trust them either," she told reporters.
Opposition Leader Brad Battin was campaigning alongside his Werribee candidate, former policeman and army trooper Steve Murphy, and said the premier was off-topic.
"What we're seeing from the government is they're acting more like an opposition, talking about me, rather than the issues out here," Mr Battin told reporters.
With Labor sliding in the polls, the Victorian Liberals are hoping for upsets in Werribee, which Labor has held in different forms since 1970, and Prahran, a Greens stronghold for three running elections.
The Liberals' Prahran candidate Rachel Westaway accepted she needs a big swing to win the seat, which the Greens held with a 12 per cent margin in 2022.
"I'm not in it to lose, but I'm very conscious that this is a vote for the people and this is their opportunity to make a protest vote," Ms Westaway told reporters in South Yarra.
The Prahran seat became available after Greens MP Sam Hibbins quit in disgrace following revelations he had an affair with a staffer.
His would-be Greens replacement Angelica Di Camillo is a environmental engineer, climate strategist and campaigner who has has campaigned on cheaper public transport, climate change and caps on rental increases.
Labor is not running a candidate in Prahran, but is backing local teacher and CFA volunteer John Lister in Werribee.
Werribee came into contention after the resignation of Treasurer Tim Pallas, who won on a 10.9 per cent margin in 2022.
But with Labor sliding in the polls and support waning in the outer suburbs, pollsters believe it could change hands.
"The Victorian Liberals have been doing well in the outer suburbs, particularly the outer western suburbs," said election analyst Ben Raue of Tally Room.
"That could be the kind of seat where you could see a backlash (and) they could lose."
A swing of seven per cent in Werribee would be a pass mark for Labor but anything more would be problematic for Ms Allan, former Liberal strategist turned pollster Tony Barry said.
"If the Liberals were to win - which would still be an extraordinary effort - that's going to send shockwaves through the Victorian body politic," the RedBridge director said.
Cost of living is the dominant issue among 65 per cent of voters, with housing attainability adding another 15 per cent.
The Victorian Liberals have also campaigned heavily on crime, following several high profile murders and knife attacks in Prahran and Werribee in recent months.
