The Liberal Party faces a potential wipeout in Perth, with new polling suggesting Labor is within striking distance of winning a once-safe Liberal seat for the first time in more than a decade.

Internal Labor Party polling this month shows the ALP and the coalition neck-and-neck on a two-party preferred basis in the northern suburbs seat of Stirling — a swing to the Opposition of 6 per cent.

If that swing were replicated across the State, the Liberals would be reduced to just five of 16 seats in WA, with Cabinet ministers Michael Keenan, Christian Porter, Ken Wyatt and backbenchers Andrew Hastie and Steve Irons at risk.

The survey, by robo-call pollsters Community Engagement, quizzed 1735 voters in Stirling. It found 35.9 per cent of those surveyed would vote for the Liberals, a drop for Mr Keenan’s primary vote on the last election of almost 15 percentage points.

The survey shows Labor’s primary vote in Stirling up slightly at 33.5 per cent.

The polling shows 8 per cent of respondents in the seat were likely to vote for the Greens and 4.7 per cent would vote for One Nation.

Just over 7 per cent said they would vote for “another party” and 10.8 per cent of respondents were unsure who they would support.

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Mr Keenan won Stirling at the 2004 election when John Howard was prime minister and held it in 2007 even as the rest of the country swung its support behind Kevin Rudd’s Labor.

Before 2004, Stirling had been a swing seat, changing hands between the major parties. Labor has nomin-ated anti-asbestos campaigner Melita Markey in Stirling at the next Federal poll.

Liberal State director Sam Calabrese agreed the race in Stirling would be tight.

“Without giving undue credit to the poll in question, there is no doubt that the next Federal election will be close,” he said.

“There will be a very clear choice between Michael Keenan who has a strong track record of delivering for the people of Stirling and the Labor candidate who wants to increase taxes and weaken our borders.”

The survey comes as the WA Liberals face a backlash from grassroots members over the decision not to run a candidate in the Federal seat of Perth in a by-election in July.

Another WA Liberal seized on the poll as evidence the party was right not to field a candidate in Perth.

“We were definitely not going to get this mythical swing to us in Perth,” the Liberal said.