While he will still be comfortably re-elected with such a result, it will be the first swing against him since he first won the seat in 2004. He increased his margin at the 2007, 2010 and 2013 elections. Prime Minister Malcolm Turnbull's popularity in his electorate of Wentworth has fallen. Credit:Andrew Meares The polling underscores just how much his popularity has waned since he took over the nation's top job last year. The poll, commissioned by the Labor candidate, wealthy art dealer Evan Hughes, finds 55.6 per cent of Wentworth voters report that their opinion of Mr Turnbull has declined since September. His standing with both men and women and across all age groups has diminished, the polling shows.

Only 14.5 per cent of people say their opinion of him has improved. About 30 per cent say their opinion is unchanged. Evan Hughes is running for the seat of Wentworth against Prime Minister Malcolm Turnbull. Credit:James Brickwood Almost 35 per cent of Liberal voters have cooled on him, while almost 80 per cent of Labor voters and close to 90 per cent of Greens voters say their opinion of him has diminished. More than 53 per cent of respondents say Mr Turnbull has failed to live up to their expectations. Men and the over-50s are the most likely to be disappointed with his performance. The polling comes a day after the latest Fairfax-Ipsos poll puts Labor ahead of the Coalition for the first time on 51-49. It also shows Mr Turnbull's personal approval rating continuing to slide.

Mr Hughes believes the Wentworth polling says a lot about Mr Turnbull's leadership. "The people of Wentworth aren't shifting their votes because they've changed," Mr Hughes told Fairfax Media. "They're shifting their votes because Malcolm Turnbull's just not the man he used to be. "Old Malcolm used to voice Wentworth's beliefs but he doesn't stand for those principles anymore." Asked what issues would most influence their votes, 19 per cent of people say Medicare and about 18 per cent say climate change. Sixteen per cent say changes to superannuation and 15.2 say changes to negative gearing are their top priorities. About 13 per cent say school funding and fewer than 10 per cent say gay marriage.

Almost half – 48.6 per cent – say Mr Turnbull's performance on all those issues have made them less likely to vote for him. However, Mr Turnbull maintains an overall lead across both genders and all age groups. A third of undecided voters say they have a slight leaning towards Mr Turnbull, while 28 per cent are leaning towards Labor. The automated telephone poll was conducted on May 31, with a sample size of 626.