One Nation candidate David Farley has secured a commanding victory in the federal Farrer by-election held on May 9, 2026, marking the party's historic first win in a House of Representatives seat after former Liberal MP Sussan Ley's resignation following her leadership loss. Early counts show Farley's primary vote surging to around 40% with a two-candidate preferred margin of approximately 57% over independent Michelle Milthorpe, amid a 31-point crash in the Liberal primary for Raissa Butkowski to 12% and negligible support for Family First's Rebecca Scriven. Trader consensus at 100% for Farley reflects official projections and declarations from the Australian Electoral Commission, with Family First's Scriven, Liberal's Butkowski, and non-candidate Helen Dalton trailing at 0.1%. Scenarios challenging this include rare recount demands or postal vote shifts, though the wide margin makes resolution certain absent extraordinary procedural disputes.