Labor continues to hold a narrow lead over the government in the latest Newspoll after its Super Saturday triumph, but Malcolm Turnbull remains voters’ clear choice as prime minister.

Fresh from convincing wins in the Longman and Braddon by-elections, the federal opposition has maintained their 51-49 lead over the coalition in the poll published in The Australian on Monday.

The national poll, which was conducted between Thursday and Sunday, is the 37th in a row in which the coalition has trailed Labor on a two-party basis.

But Mr Turnbull remains the nation’s preferred prime minister, leading Bill Shorten by 48 to 29 per cent.

Labor candidate Susan Lamb comfortably won the Queensland seat of Longman with an expected 54.5 per cent of the two-party preferred vote, despite polling last week showing the government and opposition neck-and-neck.

In the Tasmanian seat, Labor candidate Justine Keay won back her seat of Braddon with an expected 52 per cent of the vote.

Labor also retained the WA seats of Perth and Fremantle in the Super Saturday by-elections.

The result has sparked talk among coalition frontbenchers of a policy rethink, particularly on its push for big business tax cuts.