Pollsters have again blamed the carbon tax for a fall in Prime Minister Julia Gillard's popularity in the latest opinion poll.
Today's Nielsen poll, published in the Sydney Morning Herald, puts Ms Gillard's approval rating at 47 per cent, the lowest since she took office.
The survey also shows 39 per cent of people prefer Kevin Rudd as Labor leader, putting him five points ahead of Ms Gillard.
The Coalition leads Labor on the two-party preferred vote, 54 points to 46.
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