Some 42 per cent of Victorians said they would give their primary vote to Labor, according to a Resolve Political Monitor poll for The Age released on Thursday.

It found Premier Daniel Andrews maintained a comfortable lead over Liberal leader Matthew Guy as preferred premier - by 46 per cent to 28 pre cent - just over two months out from the vote.

The Liberal Party's primary vote has fallen to 28 per cent, with support dipping well below its result at the last state election.

Resolve strategic director Jim Read told The Age while some voters were disgruntled about the way the Labor government approached the pandemic and lockdowns, it was a case of "stick to the devil you know".

Health is shaping up to be a major issue at the November poll, with both major parties this week unveiling pledges to upgrade the hospital system.

Labor announced upgrades to the Northern, Austin and Wonthaggi hospitals and plans to employ more paramedic practitioners across the state.

It also committed $400 million to rebuild Maroondah hospital and rename it Queen Elizabeth II Hospital.

The renaming sparked backlash, with Marcus Stewart from the First Peoples' Assembly of Victoria saying it would make the hospital "culturally unsafe" for Indigenous people.

The government has also faced controversy over the Suburban Rail Loop and Airport Rail Link after an audit of business cases for the projects found they lacked sufficient analysis of alternative project options.

This week the Coalition promised to expand Box Hill and Maroondah hospitals if it won the election. It also pledged an extra $125 million towards the state's triple-zero system.

Australian Associated Press