Prime Minister Malcolm Turnbull has no plans to campaign in Western Australia before next Saturday's state election as Liberal premier Colin Barnett faces the fight of his political life to hold on to power.

A ReachTEL poll commissioned by Fairfax Media last week showed Labor ahead 52 per cent to 48 per cent in the two-party preferred vote though it still faces a challenge to win the 10 seats required to form government.

Despite state issues dominating the campaign, a loss for the Liberals would be another blow for Mr Turnbull who is trailing in the polls and leads an increasingly divided federal party room.

Mr Turnbull has visited Western Australia just once during the state election campaign, in a poorly received trip that lasted less than 24 hours.