An Australian political party which advocates Donald Trump's idea of banning Muslim immigration says its membership has quadrupled in size since its launch with disaffected National and Liberal party members comprising the bulk of those joining.

The Australian Liberty Alliance (ALA) which was launched in secret in Perth last year by the far-right and anti-immigration Dutch MP Geert Wilders puts its growth down to social media given it has received virtually no mainstream news coverage and claims it had its request to advertise nationally in Rupert Murdoch's News Corp newspapers knocked back.

Though neither the Liberals nor Labor consider the party a serious threat, Liberal MPs confirmed the party was stealing "rank and file" members and said there had been a rise in communications from disaffected supporters telling them they were ditching the Coalition for the ALA, following last year's leadership change and the government's subsequent poor performance.

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