The Coalition continues to trail Labor on the two-party preferred vote, according to the latest Newspoll.

Monday marks the 100-day anniversary of the Coalition’s close-run election result and the Newspoll, published in the Australian, points to an almost even divide between support for the parties with 52% backing Labor and 48% to the Coalition.

Malcolm Turnbull however has increased his lead over Bill Shorten as preferred prime minister by one point to 45%, while the opposition leader has slipped from 33% to 30%.

The poll showed little improvement for the Coalition from last month, which was the worst two-party result since Tony Abbott was toppled as prime minister.

Voters were also asked about the prospect of paying more for renewable energy, with 45% saying they would be willing to do so. However, 44% don’t want to pay anything for energy generated through sources such as wind and solar.

Nearly two-thirds of those who were open to paying more would spend about $100 a year more or less than $10 a month on renewable power.

Just over half of all Coalition voters said they would not be prepared to pay more for renewable energy, with 39% of Labor voters and 25% of Greens voters also unwilling.