Compare

Keir Mather vs Alberto Costa

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 Alberto Costa
Alberto Costa
Con South Leicestershire

Voting alignment

Keir Mather and Alberto Costa voted the same way 3% of the time, based on 383 shared comparable votes.

13 same votes 370 different votes 383 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
4 Aye 7 No
Benefits 18% aligned 11 shared votes
5 Aye 6 No
6 Aye 2 No
Environment / Climate 13% aligned 8 shared votes
3 Aye 5 No
6 Aye 21 No
Migration 11% aligned 27 shared votes
18 Aye 9 No
14 Aye 27 No
Crime / Justice 7% aligned 41 shared votes
26 Aye 15 No
42 Aye 27 No
Tax 0% aligned 69 shared votes
27 Aye 42 No
Most different by topic
42 Aye 27 No
Tax 0% aligned 69 shared votes
27 Aye 42 No
23 Aye 11 No
Work / Employment 0% aligned 34 shared votes
11 Aye 23 No
18 Aye 9 No
Education 0% aligned 27 shared votes
9 Aye 18 No
8 Aye 14 No
Defence 0% aligned 22 shared votes
14 Aye 8 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
81.1 %
8 % above average
Rank 182 of 649
587
779 eligible divisions
Total votes
1,913
2,359 eligible divisions
288
49.1 % of votes cast
Aye votes
905
47.3 % of votes cast
299
50.9 % of votes cast
No votes
1,008
52.7 % of votes cast
0
0.0 % of votes cast
Against party
9
0.5 % of votes cast
2 years, 11 months
Since 20 Jul 2023
Commons service
11 years, 2 months
Since 7 May 2015

Debates

95
+18.0 vs Commons average
Rank 160 of 649
Appearances
17
-60.0 vs Commons average
Rank 596 of 649
465
+328.3 vs Commons average
Rank 22 of 649
Contributions
18
-118.7 vs Commons average
Rank 599 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
£2,033,867
all imported IPSA years
£306,391
35 % above average
Latest expenses
£291,572
29 % above average
1
1 registered category
Registered interests
29
7 registered categories
0
matched sponsored bills
Sponsored bills
3
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
Brexit / EU
199 of 211 votes
Transport
31 of 33 votes
#2
Foreign Affairs
64 of 69 votes
Democracy / Parliament
12 of 13 votes
#3
Environment / Climate
44 of 48 votes
Benefits
27 of 31 votes
#4
Work / Employment
68 of 75 votes
NHS / Health
12 of 14 votes
#5
Trade
78 of 89 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
Aye
Draft Climate Change Act 2008 (Credit Limit) Order 2026 24 Jun 2026
Environment / Climate
No
Aye
Draft Climate Change Act 2008 (International Aviation and International Shipping) Regulations 2026 24 Jun 2026
Environment / Climate Transport
No
Aye
Draft Carbon Budget Order 2026 24 Jun 2026
Environment / Climate
No
Aye
Customs (Tariff and Miscellaneous Amendments) (No. 4) Regulations 2026 24 Jun 2026
Trade
No
Where they voted the same
No
King's Speech Motion for an Address: amendment (l) 20 May 2026
No
No
Sentencing Bill Committee: New Clause 30 21 Oct 2025
Crime / Justice
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
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
No
Scotland (Self-Determination): Ten Minute Rule Motion 16 Jan 2024
No
Member source UK Parliament Members API
Voting source Commons Votes API