The former investment banker won the 2017 election with 66.1% of the vote on a reformist project to modernise the euro zone's second largest power.
Scott Morrison was sworn in as the country's 30th leader late on Friday after a bitter Liberal Party revolt against moderate Malcolm Turnbull.
The latest Newspoll, published by The Australian newspaper on Monday, gave Turnbull a 40% approval rating.
India's ruling party will make gains in a key election to rule the southern state of Karnataka but fall short of a majority, an opinion poll showed.
Eighty percent of 1,200 Filipinos surveyed by pollster Pulse Asia late last month said they trust and approve of President Duterte slightly down from 81% and 82% respectively in its June survey.
Prime Minister Theresa May's lead in the polls has fallen to 5 percentage points, a new low less than two weeks ahead of a June 8 election, but her personal rating recovered slightly since the Manchester suicide bombing.
French presidential candidate Francois Fillon denounced a scandal engulfing his campaign as a plot by Socialists, asking backers to stay loyal despite an opinion poll showing he had lost his status as favourite.