Compare

Keir Mather vs David Simmonds

A side-by-side comparison of voting participation, party rebellion, topic focus, and recent voting overlap.

Photograph of Keir Mather
Keir Mather
Lab Selby
vs
Photograph of David Simmonds
David Simmonds
Con Ruislip, Northwood and Pinner

Voting alignment

Keir Mather and David Simmonds voted the same way 3% of the time, based on 376 shared comparable votes.

13 same votes 363 different votes 376 shared votes

Alignment only includes divisions where both MPs recorded an Aye or No vote. Tellers, absences, abstentions, and missing votes are excluded.

Topic alignment

Closest by topic
3 Aye 0 No
Environment / Climate 33% aligned 3 shared votes
1 Aye 2 No
3 Aye 7 No
NHS / Health 20% aligned 10 shared votes
9 Aye 1 No
7 Aye 8 No
Benefits 13% aligned 15 shared votes
6 Aye 9 No
5 Aye 23 No
Migration 11% aligned 28 shared votes
20 Aye 8 No
16 Aye 17 No
Crime / Justice 6% aligned 33 shared votes
17 Aye 16 No
Most different by topic
40 Aye 28 No
Tax 0% aligned 68 shared votes
28 Aye 40 No
24 Aye 7 No
Education 0% aligned 31 shared votes
7 Aye 24 No
16 Aye 10 No
Work / Employment 0% aligned 26 shared votes
10 Aye 16 No
9 Aye 12 No
Defence 0% aligned 21 shared votes
12 Aye 9 No
18 Aye 2 No
Digital / Online Safety 0% aligned 20 shared votes
2 Aye 18 No

Topic alignment uses local topic tags, so a division can count towards more than one topic.

Voting record

75.4 %
3 % above average
Rank 305 of 649
Participation
83.4 %
11 % above average
Rank 133 of 649
587
779 eligible divisions
Total votes
1,368
1,641 eligible divisions
288
49.1 % of votes cast
Aye votes
660
48.2 % of votes cast
299
50.9 % of votes cast
No votes
708
51.8 % of votes cast
0
0.0 % of votes cast
Against party
9
0.7 % of votes cast
2 years, 11 months
Since 20 Jul 2023
Commons service
6 years, 7 months
Since 12 Dec 2019

Debates

95
+18.0 vs Commons average
Rank 160 of 649
Appearances
111
+34.0 vs Commons average
Rank 116 of 649
465
+328.3 vs Commons average
Rank 22 of 649
Contributions
264
+127.3 vs Commons average
Rank 65 of 649

Debate figures cover imported Hansard debate appearances from the last 12 months.

Financials and interests

£451,152
all imported IPSA years
Lifetime expenses
£1,105,547
all imported IPSA years
£306,391
35 % above average
Latest expenses
£252,887
12 % above average
1
1 registered category
Registered interests
7
3 registered categories
0
matched sponsored bills
Sponsored bills
1
matched sponsored bills

Expenses use IPSA totals for financial year 2024-25. Sponsored bill counts depend on currently imported bill sponsor metadata.

Most active voting topics

Education
50 of 52 votes
#1
Democracy / Parliament
35 of 37 votes
Transport
31 of 33 votes
#2
Migration
145 of 154 votes
Democracy / Parliament
12 of 13 votes
#3
Housing
48 of 53 votes
Benefits
27 of 31 votes
#4
Environment / Climate
39 of 44 votes
NHS / Health
12 of 14 votes
#5
Defence
62 of 70 votes

Recent voting overlap

Where they voted differently
No
Public Office (Accountability) Bill Report Stage: Amendment 19 14 Jul 2026
Aye
No
Public Office (Accountability) Bill Report Stage: Amendment 199 14 Jul 2026
Aye
No
Immigration and Asylum Bill: Reasoned Amendment to Second Reading 13 Jul 2026
Migration
Aye
Aye
Draft Children’s Wellbeing and Schools Act 2026 (Establishment of Schools) (Consequential Amendments) Regulations 2026 8 Jul 2026
Education
No
Aye
Draft Supply of Machinery (Safety) (Amendment etc.) and the EU Machinery Regulation (Enforcement etc. in Northern Ireland) Regulations 2026 8 Jul 2026
No
Aye
Draft Town and Country Planning (Discharge of Local Planning Authority Functions) (England) Regulations 2026 8 Jul 2026
No
No
Taxation (Energy and Vehicles) Bill Committee: New Clause 5 1 Jul 2026
Energy Tax Transport
Aye
No
Taxation (Energy and Vehicles) Bill Committee: New Clause 4 1 Jul 2026
Energy Tax Transport
Aye
Aye
Employment Tribunal (Extension of Time Limits) (Miscellaneous Amendments and Transitional Provisions) Regulations 2026 1 Jul 2026
No
Aye
Employment Tribunals Extension of Jurisdiction (England and Wales) (Amendment) Order 2026 1 Jul 2026
No
Where they voted the same
No
King's Speech Motion for an Address: amendment (l) 20 May 2026
No
No
Universal Credit and Personal Independence Payment Bill Committee: New Clause 8 9 Jul 2025
Benefits
No
No
Universal Credit and Personal Independent Payment Bill Committee: Amendment 39 9 Jul 2025
Benefits
No
Aye
Terrorism Act 2000 (Proscribed Organisations) (Amendment) Order 2025 2 Jul 2025
Crime / Justice
Aye
No
Crime and Policing Bill Report Stage: Amendment 160 17 Jun 2025
Crime / Justice
No
Aye
Tobacco and Vapes Bill: Third Reading 26 Mar 2025
NHS / Health
Aye
Aye
Tobacco and Vapes Bill: Second Reading 26 Nov 2024
NHS / Health
Aye
No
Safety of Rwanda (Asylum and Immigration) Bill Committee: Amendment 23 17 Jan 2024
Migration
No
No
Safety of Rwanda (Asylum and Immigration) Bill Committee: Amendment 19 16 Jan 2024
Migration
No
No
Safety of Rwanda (Asylum and Immigration) Bill Committee: Amendment 10 16 Jan 2024
Migration
No
Member source UK Parliament Members API
Voting source Commons Votes API