Member of Parliament

Sir Iain Duncan Smith

Con Conservative Chingford and Woodford Green ID 152

Voting alignment

Sir Iain Duncan Smith has 638 current-MP voting relationships with at least 50 shared comparable votes. These lists show the MPs who most often voted the same way, and the MPs who most often voted differently, when both recorded an Aye or No vote.

Explore Commons-wide voting alignment →

Most similar MPs

Highest same-vote percentages against Sir Iain Duncan Smith.

Exclude own party

Andrew Rosindell 99%

RUK Romford

1,321 same 10 different 1,331 shared

Compare

Rupert Lowe 99%

RB Great Yarmouth

155 same 1 different 156 shared

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Suella Braverman 98%

RUK Fareham and Waterlooville

1,424 same 24 different 1,448 shared

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Danny Kruger 98%

RUK East Wiltshire

1,081 same 23 different 1,104 shared

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Nigel Farage 98%

RUK Clacton

130 same 3 different 133 shared

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Robert Jenrick 97%

RUK Newark

1,429 same 37 different 1,466 shared

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Lee Anderson 97%

RUK Ashfield

994 same 34 different 1,028 shared

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James McMurdock 97%

Ind South Basildon and East Thurrock

173 same 6 different 179 shared

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Sarah Pochin 94%

RUK Runcorn and Helsby

167 same 11 different 178 shared

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Alex Easton 94%

Ind North Down

165 same 11 different 176 shared

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Jim Allister 93%

TUV North Antrim

273 same 20 different 293 shared

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Richard Tice 91%

RUK Boston and Skegness

212 same 21 different 233 shared

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Robin Swann 84%

UUP South Antrim

265 same 51 different 316 shared

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Gavin Robinson 82%

DUP Belfast East

1,072 same 238 different 1,310 shared

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Mr Gregory Campbell 82%

DUP East Londonderry

963 same 212 different 1,175 shared

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Gideon Amos 82%

LD Taunton and Wellington

245 same 55 different 300 shared

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Dr Al Pinkerton 82%

LD Surrey Heath

233 same 50 different 283 shared

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Sammy Wilson 81%

DUP East Antrim

1,035 same 238 different 1,273 shared

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Brian Mathew 81%

LD Melksham and Devizes

222 same 53 different 275 shared

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Monica Harding 81%

LD Esher and Walton

219 same 50 different 269 shared

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Mr Paul Kohler 81%

LD Wimbledon

196 same 45 different 241 shared

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Jim Shannon 80%

DUP Strangford

1,342 same 341 different 1,683 shared

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Calum Miller 80%

LD Bicester and Woodstock

233 same 57 different 290 shared

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Mr Angus MacDonald 80%

LD Inverness, Skye and West Ross-shire

192 same 48 different 240 shared

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Helen Maguire 79%

LD Epsom and Ewell

196 same 51 different 247 shared

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Most different MPs

Lowest same-vote percentages against Sir Iain Duncan Smith.

Harpreet Uppal 1%

Lab Huddersfield

5 same 366 different 371 shared

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Kevin McKenna 1%

Lab Sittingbourne and Sheppey

5 same 352 different 357 shared

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Claire Hughes 1%

Lab Bangor Aberconwy

5 same 350 different 355 shared

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Pam Cox 1%

Lab Colchester

5 same 347 different 352 shared

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Ms Julie Minns 1%

Lab Carlisle

5 same 345 different 350 shared

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Sarah Russell 1%

Lab Congleton

5 same 339 different 344 shared

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Kevin Bonavia 1%

Lab Stevenage

5 same 338 different 343 shared

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Jayne Kirkham 1%

Lab Truro and Falmouth

5 same 337 different 342 shared

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Sarah Edwards 1%

Lab Tamworth

5 same 337 different 342 shared

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Steve Witherden 1%

Lab Montgomeryshire and Glyndŵr

5 same 332 different 337 shared

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Sonia Kumar 1%

Lab Dudley

5 same 330 different 335 shared

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Michael Payne 1%

Lab Gedling

2 same 321 different 323 shared

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Pamela Nash 1%

Lab Motherwell, Wishaw and Carluke

4 same 312 different 316 shared

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Torsten Bell 1%

Lab Swansea West

4 same 287 different 291 shared

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Dan Aldridge 1%

Lab Weston-super-Mare

4 same 271 different 275 shared

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Simon Lightwood 2%

Lab Wakefield and Rothwell

13 same 531 different 544 shared

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Heidi Alexander 2%

Lab Swindon South

12 same 512 different 524 shared

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Alistair Strathern 2%

Lab Hitchin

9 same 422 different 431 shared

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Alex Mayer 2%

Lab Dunstable and Leighton Buzzard

8 same 389 different 397 shared

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Keir Mather 2%

Lab Selby

9 same 388 different 397 shared

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Paul Davies 2%

Lab Colne Valley

7 same 385 different 392 shared

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Callum Anderson 2%

Lab Buckingham and Bletchley

8 same 382 different 390 shared

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Steve Yemm 2%

Lab Mansfield

7 same 380 different 387 shared

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Tristan Osborne 2%

Lab Chatham and Aylesford

7 same 380 different 387 shared

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Josh Dean 2%

Lab Hertford and Stortford

8 same 377 different 385 shared

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Voting source Commons Votes API

Method Only divisions where both MPs recorded comparable Aye/No votes are included. Tellers, absences, abstentions, and missing votes are excluded.