An online poll of three federal electorates held by the Liberal Party found strong support for centrist independents backed by Simon Holmes à Court’s Climate 200 fundraising group.

Anti-Liberal independents are coming first or second in Goldstein, Wentworth and North Sydney, according to polling conducted by private pollster Raphaella Crosby, which suggests the challengers could defeat or come close to beating government MPs after receiving preferences from Labor and minor parties.