Federal Parliament · House of Representatives
Mark Dreyfus
Member for Isaacs · Australian Labor Party · VIC
Photo: UK Home Office, CC BY 2.0, via Wikimedia Commons
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First preferences
49.4%
53,454 votes · +6.6 pts swing
After preferences
64.3%
Against Fiona Ottey (Liberal)
Winning margin
14.3 pts
A safe seat
How Isaacs voted · 2025 federal election
Bar colours show each candidate's party.
First preferences
How Isaacs voted · 2025 federal election, first preferences
Fiona Ottey (LIB)30,660 votes,28.3%swing −1.2
Matthew Kirwan (GRN)15,200 votes,14.1%swing +2.0
Geoff McMahon (ONP)4,989 votes,4.6%swing +1.6
Audrey Harmse (FF)3,878 votes,3.6%swing +3.6
Bars show each candidate's share of formal first-preference votes on a 0–100% scale. Swing is the change in share, in percentage points, as published by the AEC.
After preferences (two-candidate preferred)
64.3%35.7%
The vertical line marks 50%.
Margin 14.3 pts (Labor): safe by the AEC's thresholds (under 6 points marginal, 6–10 fairly safe, over 10 safe). This describes this result, not a forecast.
Results as a table
| Candidate | Party | Votes | First pref. | Swing |
|---|---|---|---|---|
| Mark Dreyfus | Australian Labor Party | 53,454 | 49.41% | +6.6 pts |
| Fiona Ottey | Liberal | 30,660 | 28.34% | -1.2 pts |
| Matthew Kirwan | The Greens | 15,200 | 14.05% | +2.0 pts |
| Geoff McMahon | Pauline Hanson's One Nation | 4,989 | 4.61% | +1.6 pts |
| Audrey Harmse | Family First | 3,878 | 3.58% | +3.6 pts |
Source: Australian Electoral Commission