Voters from Bondi to Potts Point in Sydney's east, Avalon to Oxford Falls in the city's northern beaches, and Surrey Hills to Kew in Melbourne's inner east were polled by uComm on behalf of the Australia Institute.

These area are encompassed by the seats of Kooyong, Mackellar and Wentworth.

Once Liberal strongholds, these three electorates are now held by teal independents Monique Ryan, Sophie Scamps and Allegra Spender respectively.

And further bucking their previous reputation, their voters have shown strong support for the Labor government's revised stage three tax cuts.

Across all three seats, 62 to 63 per cent of respondents supported changes to the government's tax cuts.

Meanwhile, 31 to 36 per cent of voters were opposed to the amendments and two per cent to seven per cent were unsure of their position.

This comes despite weeks of condemnation from the opposition, who have claim the prime minister broke an election promise after previously saying he would leave the tax cuts unchanged.

"A clear majority of voters understand the importance of a government responding to these economic conditions, and back the government's changes," Australia Institute executive director Richard Denniss said.

The new policy, which is aimed at providing cost of living relief for middle Australia, will give those earning less than $150,000 a greater cut than under the original proposal, while those earning more will still get a tax benefit but less than previously forecast.

Australians in these areas have also felt the sting of price rises, with 70 per cent saying their wages had grown much slower than the cost of living.

But about 69,000 out of roughly 325,000 voters in the three seats who would have been left out under the former government's plan will now receive a tax cut.

"It is clear that people across the country are struggling with cost of living pressures," Dr Denniss said.

"Amending the stage three cuts makes them far more equitable."

Australian Associated Press