Senate
Matt O'Sullivan
Matt O'Sullivan is a Liberal Party of Australia senator for Western Australia. First elected 1 July 2019.
- 2019 Entered Senate
- Liberal Party of Australia
What do they focus on?
Not enough tracked speeches or amendments to say yet.
Bars show tracked speeches and amendments by policy area.
How do they vote?
Share of recorded votes on the same side as each party's majority.
689 tracked votes while with Liberal.
How do they compare?
- Years in parliament i Total time served across every stint in either chamber, up to the end of the tracked record. 7 yrs 0.2 avg 8.5 yrs 33.3
- Votes against their party i Recorded votes cast against their own party's majority side. The average is across party members only. 3 avg 0.6 26
- Bills introduced i Bills they introduced to Parliament, counted across the tracked record. 0 avg 2.8 46
- Amendments sponsored i Amendments to bills they put forward during debate, counted across the tracked record. 3 avg 7.9 226
The marker starts at their party’s position and shifts only for floor-crossings towards a neighbouring party. No topic strip is shown because their economic, social and environment votes followed the party line.
What have they done lately?
In late June 2026, he opposed the income-tax bill in speeches and voted No on its second reading. He nevertheless voted Aye on several proposals concerning tax brackets, scrutiny and amendments; those questions were defeated, while the bill passed its recorded second-reading vote. He voted Aye on two procedural questions for the NDIS bill, both carried. On the building-workplaces bill, he voted No against the bill, which passed 31–25. On the Fairer Fuel bill, he said the coalition would support quick commencement during the fuel emergency while seeking a retrospective inquiry and possible later amendments.
When do they vote against their party?
3 times across 689 tracked votes. Most recently:
- 19 June 2023 Senate passed the bill
- 16 June 2023 Voice referendum bill clears Senate second reading
- 16 June 2023 Agree to bill as printed
What do they say in debate?
54 tracked speeches across 48 bills.
- 24 backing a bill
- 5 with reservations
- 24 against
- 1 no clear position
Go deeper
Every figure links to a cited page.
About these numbers
Based on 766 tracked bills from the 47th and 48th Parliaments, current to 6 July 2026. This is a sample of parliamentary activity, not the complete record.
Career markers come from dated public records. Voting figures use division lists only. For party members, the left-to-right marker begins at the party position. It moves only when the member votes against that party and on the same side as a neighbouring party; other cross-party combinations do not affect it. Independents and minor-party members are placed by their votes in divisions where the Greens and the Coalition took opposite sides. If this position differs from a member’s broader public politics, a note appears below the strip.