Poll shows Australian PM's popularity slides over sex scandal

Poll shows Australian PM's popularity slides over sex scandal
Australia's prime minister Malcolm Turnbull.

SYDNEY - Australian Prime Minister Malcolm Turnbull's personal popularity has slumped to a level seen only once before, a widely watched poll showed on Monday, hit by criticism for his handling of an affair between his former deputy and a staffer.

The latest Newspoll, published by The Australian, found 37 per cent of respondents backed the conservative Turnbull as prime minister, versus 35 per cent for Labor opposition leader Bill Shorten, matching his thinnest lead since becoming PM in 2015.

Monday's poll is Mr Turnbull's slimmest margin since last November, narrowing a gap of 14 points over Mr Shorten before news of the affair broke, when 45 per cent of respondents preferred Mr Turnbull, to 31 per cent for Mr Shorten.

Mr Turnbull's ruling coalition has trailed Labor in 28 straight Newspolls but he has relied on his personal standing to head off a leadership challenge.

Last month, some members of his own party accused him of overreach, however, when he criticised his deputy, Barnaby Joyce, over the affair, before banning sex between politicians and their staff.

Mr Joyce, who is married and expecting a baby with a former media adviser, quit as leader of the rural National Party amid demands from some party members to end the century-old coalition.

In a twist, Mr Joyce has since told local media he is unsure the child is his.

"Things are going to get worse for the government," said Monash University political scientist Nick Economou.

The Newspoll survey of 1,657 voters between March 1 and March 5 was unlikely to have factored in the impact of an attack on Mr Shorten by Mr Turnbull's minister for jobs, Michaelia Cash, on March 1, Economou added.

In a debate about Mr Joyce, Ms Cash used parliamentary protections to voice unsubstantiated rumours about Mr Shorten.

If Mr Turnbull criticises Ms Cash, "that'll just reinforce the sense that there's no real discipline, that there's no real direction in that government", Economou added.

Last year, Mr Turnbull's leadership was undermined by a constitutional crisis that forced members of most parties, including Mr Joyce, to resign and recontest their seats after being found to hold dual citizenship, in breach of Australian law.During that period, in November, his margin against Mr Shorten shrank to two points.

Australian politicians are tracking the number of Newspolls in which the opposition outscores Mr Turnbull's coalition, after he criticised former prime minister Tony Abbott for leading his party through 30 straight Newspoll losses, during Mr Turnbull's bid to replace Mr Abbott in 2015.

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