Voter support for Malcolm Turnbull has fallen to its lowest level since he seized power, the latest Newspoll shows.

The Coalition heads into Christmas with its two-party preferred vote up from 47 to 48 per cent, but still trailing Labor which has notched up its sixth successive lead, on 52 per cent, the poll taken for The Australian newspaper shows..

Mr Turnbull’s standing has again fallen, with his rating as better prime minister dropping two points to 41 per cent, the lowest level since he toppled Tony Abbott as leader 15 months ago.

The prime minister’s standing has tumbled 18 points over the course of this year.

His margin over Opposition Leader Bill Shorten, who is favoured by 32 per cent as the preferred prime minister, has dropped from a 39-point lead in January to just nine points.

The Newspoll of 1629 voters, taken from Thursday to Sunday, shows the government’s primary vote has gained one point to 39 per cent and Labor’s primary vote fell two points to a two-month low of 36 per cent.

The Greens remain unchanged on 10 per cent while support for independents and other parties edged up from 14 to 15 per cent.