Liberal Gisele Kapterian has abandoned her bid for Australia's most marginal seat, conceding defeat after four months of challenges.

Ms Kapterian on Thursday said she was satisfied the result was correct after a final review of the ballot papers.

Independent MP Nicolette Boele won the Sydney-based seat of Bradfield at the May 3 federal election by just 26 votes.

It was previously a blue ribbon, safe Liberal electorate before she cut the margin down to four per cent at the 2022 election and claimed the razor-thin victory in 2025.

The seat was initially declared for the Liberals before a recount put Ms Boele in front.

Ms Kapterian said ballot paper interpretation was often difficult and subjective.

"In other words, after asking the on-field decision to go to the video umpire, we have h

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