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Voting Alignment – Senate

How often have two Senate members — including former senators, not just those currently sitting — voted the same way on the same piece of legislation? Based on the Australian Parliament's own division records (aph.gov.au) — see About for the method. Senate and the other chamber can't be compared to each other: they never vote on the same motion, so there's nothing to compare — compare Representatives on their own page.

Penny Wong vs Michaelia Cash

Leader of the Government in the Senate vs Leader of the Opposition in the Senate

63.2%
agreed on substantive votes (597 of 945 shared, procedural votes excluded)
56.9% agreed across all 1177 shared divisions, including procedural

Agreement by topic

Government Accountability
83% (134/162)
Tax/Economy/Finance
65% (87/133)
Climate/Environment
60% (44/74)
Industrial Relations
19% (14/72)
Health
52% (32/61)
Communications/Tech/Media
67% (38/57)
Housing
87% (47/54)
Immigration/Border
61% (30/49)
Infrastructure/Transport/Energy
83% (30/36)
Justice/Crime/Law
57% (17/30)
Defence/National Security
93% (28/30)
Aged Care/Disability
41% (12/29)

Most recent agreements

  • 2026-10-15 – Taxation of trusts (Tax/Economy/Finance)
  • 2026-10-15 – Orders for the production of documents (Government Accountability)
  • 2026-10-15 – Orders for the production of documents (Government Accountability)
  • 2026-10-15 – Order for production of documents—Minister for Indigenous Australians—Question time briefs (Indigenous Affairs)
  • 2026-10-14 – Reference to Environment and Communications Legislation Committee (Online Safety Amendment (Digital Duty of Care) Bill 2026) (Climate/Environment)
  • 2026-10-14 – Order for production of documents—Australian Broadcasting Corporation—Race Around the World program (Communications/Tech/Media)
  • 2026-10-14 – Compliance with order for production of documents—Major and Local Community Infrastructure Program (Infrastructure/Transport/Energy)
  • 2026-10-14 – Private Health Insurance Amendment (Modernising the Private Health Insurance Rebate) Bill 2026—Discharge from Notice Paper (Tax/Economy/Finance)

Most recent disagreements

  • 2026-10-15 – Customs and Other Legislation Amendment (Illicit Tobacco Enforcement Modernisation and Other Measures) Bill 2026 (Immigration/Border)
  • 2026-10-15 – Telecommunications Legislation Amendment (Universal Outdoor Mobile Obligation) Bill 2026 (Communications/Tech/Media)
  • 2026-10-13 – Aged Care Legislation Amendment (Aboriginal and Torres Strait Islander Aged Care Commissioner and Other Measures) Bill 2026 (Aged Care/Disability)
  • 2026-10-12 – Urgency motion - credit card surcharge (Tax/Economy/Finance)
  • 2026-09-15 – Reference to Environment and Communications References Committee (Commonwealth marine spatial planning and protection) (Climate/Environment)
  • 2026-09-15 – Restoration of Sex Discrimination Amendment (Restoring Common Sense and Recognising Biological Sex) Bill 2026 to Notice Paper (Gender/Family/Discrimination)
  • 2026-09-15 – Order for production of documents—Age Assurance Technology Trial (Government Accountability)
  • 2026-09-15 – Order for production of documents—National packaging standard reforms (Government Accountability)
Closeness
Penny Wong
Penny Wong
Michaelia Cash
Michaelia Cash

Penny Wong and Michaelia Cash are twins separated at birth.

(agreed on 63.2% of substantive votes)

Data: Australian Parliament division records, aph.gov.au • see Penny Wong or Michaelia Cash's full summary page