By-election wins won't lead to early poll

The prime minister has ruled out holding an early general election if the government claims victory in Longman and Braddon over the weekend.

Malcolm Turnbull has ruled out going to an early federal election if the government wins two key by-elections on Saturday.

The Liberals hold a narrow lead in recent polling for the Queensland seat of Longman and Braddon in Tasmania - which had been held by Labor - sparking speculation the prime minister may call an election this year to capitalise on the result.

But Mr Turnbull dismissed talk of an early poll, saying the government would run full-term.

"The election will be next year. The election will be in the first half of next year," he told the Seven Network on Friday.