Compare

Keir Mather vs Dr Simon Opher

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 Dr Simon Opher
Dr Simon Opher
Lab Stroud

Voting alignment

Keir Mather and Dr Simon Opher voted the same way 99% of the time, based on 349 shared comparable votes.

344 same votes 5 different votes 349 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
43 Aye 34 No
Tax 100% aligned 77 shared votes
43 Aye 34 No
24 Aye 11 No
Education 100% aligned 35 shared votes
24 Aye 11 No
10 Aye 17 No
Defence 100% aligned 27 shared votes
10 Aye 17 No
6 Aye 19 No
Crime / Justice 100% aligned 25 shared votes
6 Aye 19 No
6 Aye 16 No
Transport 100% aligned 22 shared votes
6 Aye 16 No
Most different by topic
4 Aye 11 No
Benefits 73% aligned 15 shared votes
4 Aye 11 No
43 Aye 34 No
Tax 100% aligned 77 shared votes
43 Aye 34 No
24 Aye 11 No
Education 100% aligned 35 shared votes
24 Aye 11 No
10 Aye 17 No
Defence 100% aligned 27 shared votes
10 Aye 17 No
6 Aye 19 No
Crime / Justice 100% aligned 25 shared votes
6 Aye 19 No

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

Voting record

73.5%
1% above average
Rank 342 of 650
Participation
80.5%
8% above average
Rank 185 of 650
615
837 eligible divisions
Total votes
508
631 eligible divisions
297
48.3% of votes cast
Aye votes
242
47.6% of votes cast
318
51.7% of votes cast
No votes
266
52.4% of votes cast
0
0.0% of votes cast
Against party
7
1.4% of votes cast
3 years, 3 months
Since 20 Jul 2023
Commons service
2 years, 4 months
Since 4 Jul 2024

Debates

111
+16.5 vs Commons average
Rank 179 of 650
Appearances
67
-27.5 vs Commons average
Rank 388 of 650
594
+429.4 vs Commons average
Rank 16 of 650
Contributions
100
-64.6 vs Commons average
Rank 388 of 650

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

Financials and interests

£451,152
all imported IPSA years
Lifetime expenses
£204,255
all imported IPSA years
£306,391
35% above average
Latest expenses
£204,255
10% below average
1
1 registered category
Registered interests
10
5 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
Devolution / Local Government
24 of 24 votes
Democracy / Parliament
16 of 17 votes
#2
Foreign Affairs
17 of 17 votes
Benefits
27 of 31 votes
#3
NHS / Health
11 of 11 votes
Transport
31 of 36 votes
#4
Trade
10 of 10 votes
NHS / Health
12 of 14 votes
#5
Defence
33 of 34 votes

Recent voting overlap

Where they voted differently
Aye
Draft Public Order Act 2023 (Interference With Use or Operation of Key National Infrastructure) Regulations 2025 14 Jan 2026
No rebel
Aye
Universal Credit and Personal Independence Payment Bill: Third Reading 9 Jul 2025
Benefits
No rebel
No
Universal Credit and Personal Independence Payment Bill Committee: Amendment 38 9 Jul 2025
Benefits
Aye rebel
No
Universal Credit and Personal Independence Payment Bill Committee: New Clause 8 9 Jul 2025
Benefits
Aye rebel
Aye
Universal Credit and Personal Independence Payment Bill Committee: Clause 2, as amended, and Clause 3 stand part 9 Jul 2025
Benefits
No rebel
Where they voted the same
Aye
Draft Town and Country Planning (Fees for Applications, Deemed Applications, Requests and Site Visits) (England) (Amendment and Transitional Provision) Regulations 2026 27 Oct 2026
Aye
Aye
Northern Ireland Troubles Bill: Third Reading 20 Oct 2026
Foreign Affairs
Aye
No
Northern Ireland Troubles Bill Committee: New Clause 12 20 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: New Clause 7 20 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: Amendment 32 20 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: Amendment 51 20 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: New Clause 21 19 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: Amendment 47 19 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: Amendment 4 19 Oct 2026
Foreign Affairs
No
No
Northern Ireland Troubles Bill Committee: Amendment 52 19 Oct 2026
Foreign Affairs
No
Member source UK Parliament Members API
Voting source Commons Votes API