Support for the Turnbull government has dropped by 6 per cent since last year’s federal election.
The Coalition is suffering a backlash in South Australia and losing ground in Queensland, a Newspoll analysis shows.
According to the quarterly analysis, the PM is preferred Prime Minister over Opposition Leader Bill Shorten in every state and among every age group, including young voters.
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The Coalition has also lost 10 percentage points in Queensland since the July election to drive its primary vote down to 33 per cent, as One Nation holds the support of 16 per cent of state voters.
South Australian voters have turned against the government more than in any other state over the past six months, putting Labor ahead 56 to 44 per cent in two-party terms.
But the analysis shows the government has lifted its primary vote in Victoria by three percentage points over the past three months.
The survey of 6843 voters from April to June shows Labor leading the Coalition by 53 per cent to 47 per cent in two-party terms at a national level.