Mark Dreyfus (Australian Labor Party) won Isaacs after preferences by 31,027 votes over Fiona Ottey (Liberal).
After preferences, Mark Dreyfus received 69,604 votes (64.34%). Fiona Ottey received 38,577 votes (35.66%).
Ranked here by first-preference votes. The elected member is determined by the full preferential count, not necessarily the primary-vote order.
| Primary rank | Candidate | Party | Ballot | First preferences | Primary share | Final TCP |
|---|---|---|---|---|---|---|
| 1 | Mark DreyfusElectedAEC historical incumbent marker | Australian Labor Party | 1 | 53,454 | 49.41% | 69,604 · 64.34% · +4.83 pp swing |
| 2 | Fiona Ottey | Liberal | 4 | 30,660 | 28.34% | 38,577 · 35.66% · -4.83 pp swing |
| 3 | Matthew Kirwan | The Greens | 2 | 15,200 | 14.05% | Not a TCP finalist |
| 4 | Geoff Mcmahon | Pauline Hanson's One Nation | 5 | 4,989 | 4.61% | Not a TCP finalist |
| 5 | Audrey Harmse | Family First | 3 | 3,878 | 3.58% | Not a TCP finalist |
These are official final results for the 3 May 2025 federal election. They are historical election records, not a claim about the current House membership or future candidacies.
Candidate biographies, policy positions, political finance, current tenure, and future candidacy remain separate sourced layers.
