Compare

Deirdre Costigan vs Sir Iain Duncan Smith

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

Photograph of Deirdre Costigan
Deirdre Costigan
Lab Ealing Southall
vs
Photograph of Sir Iain Duncan Smith
Sir Iain Duncan Smith
Con Chingford and Woodford Green

Voting alignment

Deirdre Costigan and Sir Iain Duncan Smith voted the same way 2% of the time, based on 341 shared comparable votes.

7 same votes 334 different votes 341 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
5 Aye 8 No
Benefits 15% aligned 13 shared votes
6 Aye 7 No
4 Aye 4 No
Democracy / Parliament 13% aligned 8 shared votes
3 Aye 5 No
3 Aye 5 No
Migration 13% aligned 8 shared votes
4 Aye 4 No
22 Aye 25 No
Crime / Justice 4% aligned 47 shared votes
23 Aye 24 No
45 Aye 25 No
Tax 0% aligned 70 shared votes
25 Aye 45 No
Most different by topic
45 Aye 25 No
Tax 0% aligned 70 shared votes
25 Aye 45 No
22 Aye 9 No
Education 0% aligned 31 shared votes
9 Aye 22 No
19 Aye 8 No
Housing 0% aligned 27 shared votes
8 Aye 19 No
20 Aye 4 No
Work / Employment 0% aligned 24 shared votes
4 Aye 20 No
8 Aye 7 No
Defence 0% aligned 15 shared votes
7 Aye 8 No

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

Voting record

91.2%
19% above average
Rank 13 of 649
Participation
81.4%
9% above average
Rank 172 of 649
538
590 eligible divisions
Total votes
1,935
2,376 eligible divisions
277
51.5% of votes cast
Aye votes
887
45.8% of votes cast
261
48.5% of votes cast
No votes
1,048
54.2% of votes cast
1
0.2% of votes cast
Against party
41
2.1% of votes cast
2 years, 2 months
Since 4 Jul 2024
Commons service
34 years, 5 months
Since 9 Apr 1992

Debates

16
-65.7 vs Commons average
Rank 603 of 649
Appearances
98
+16.3 vs Commons average
Rank 174 of 649
19
-123.3 vs Commons average
Rank 606 of 649
Contributions
172
+29.7 vs Commons average
Rank 164 of 649

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

Financials and interests

£196,485
all imported IPSA years
Lifetime expenses
£2,530,064
all imported IPSA years
£196,485
13% below average
Latest expenses
£265,254
17% above average
0
0 registered categories
Registered interests
9
3 registered categories
1
matched sponsored bills
Sponsored bills
6
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

Work / Employment
39 of 39 votes
#1
Brexit / EU
208 of 211 votes
Housing
32 of 32 votes
#2
Foreign Affairs
63 of 69 votes
Democracy / Parliament
14 of 14 votes
#3
Housing
60 of 67 votes
Migration
13 of 13 votes
#4
Migration
153 of 171 votes
Digital / Online Safety
11 of 11 votes
#5
Crime / Justice
198 of 230 votes

Recent voting overlap

Where they voted differently
Aye
Terminally Ill Adults (End of Life) Bill: Second Reading 11 Sept 2026
No
Aye
Closure motion 11 Sept 2026
No
Aye
Draft Plant Health, Seeds, Seed Potatoes and Plant Propagating Material (Amendment) (Northern Ireland) Regulations 2026 9 Sept 2026
No
No
Health Bill: Report Stage: Amendment 1 8 Sept 2026
Aye
No
Health Bill: Report Stage: New Clause 143 8 Sept 2026
Aye
No
Health Bill: Report Stage: New Clause 145 7 Sept 2026
Aye
Aye
Representation of the People Bill: Third Reading 2 Sept 2026
Democracy / Parliament
No
No
Representation of the People Bill: Report Stage: New Clause 67 2 Sept 2026
Democracy / Parliament
Aye
No
Representation of the People Bill: Report Stage: New Clause 65 2 Sept 2026
Democracy / Parliament
Aye
Aye
Draft Code of Practice on Electronic and Workplace Ballots for Statutory Trade Union Ballots 15 Jul 2026
Trade Work / Employment
No
Where they voted the same
No
Representation of the People Bill: Report Stage: New Clause 88 2 Sept 2026
Democracy / Parliament
No
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
No
Crime and Policing Bill Report Stage: Amendment 160 17 Jun 2025
Crime / Justice
No
No
Border Security, Asylum and Immigration Bill Report Stage: New Clause 21 12 May 2025
Migration
No
Member source UK Parliament Members API
Voting source Commons Votes API