Australia's mortgage-belt heartland has shifted its political allegiances from the Liberals to Labor and the coalition has lost support among younger voters, a Newspoll analysis shows.
The analysis, conducted for The Weekend Australian, shows the coalition support base narrowing, with over 65-year-olds, retirees, higher-income households and Christian voters the only groups where it holds a lead over Labor.
Younger voters have turned away from the coalition, with 18 to 34-year-olds for the first time backing the Greens ahead of the Liberal-Nationals.
Among those voters with a mortgage, 41 per cent say they would vote Labor, ahead of 33 per cent supporting the coalition.
That gives Labor a two-party-preferred vote lead over the coalition of 56 to 44 per cent among those voters.
Among younger voters Labor leads the coalition 69 to 31 per cent on a two-party-preferred basis in a demographic that makes up more than a quarter of all voters.
The primary vote for the Liberal-Nationals among 18 to 34-year-olds is now only 21 per cent compared to 24 per cent for the Greens.
The Newspoll analysis shows Victoria remains the key problem state for the coalition, with Labor now leading by an eight-point primary vote margin, 41 per cent to 33 per cent.
The coalition's second problem state is Western Australia where Labor has lifted to 40 per cent of the primary vote to the coalition's 33 per cent.
The coalition has also gone backwards in Queensland, the only state in which it still holds a lead over Labor at 39 per cent to 33 per cent.
The only mainland state where Labor lost support was in South Australia where its primary vote dropped from 40 per cent to 38 per cent, with the coalition on 35 per cent.
In NSW Labor holds a three-point primary vote margin of 38 per cent to 35 per cent.
The quarterly analysis was based on Newspoll surveys of 4756 voters across all states and territories between February 1 and April 3.
