Closest seats at the 2015 general election

The smallest winning majorities in UK general elections since 1918, in votes and as a share of the vote.

#	Constituency	Winner	Runner-up	Majority	%
1	Gower	Con Byron Davies	Lab	27	0.06
2	Derby North	Con Amanda Solloway	Lab	41	0.09
3	City of Chester	Lab Chris Matheson	Con	93	0.18
4	Croydon Central	Con Gavin Barwell	Lab	165	0.31
5	Ynys Môn	Lab Albert Owen	PC	229	0.66
6	Vale of Clwyd	Con James Davies	Lab	237	0.67
7	Ealing Central and Acton	Lab Rupa Huq	Con	274	0.54
8	Berwickshire, Roxburgh and Selkirk	SNP Calum Kerr	Con	328	0.60
9	Bury North	Con David Nuttall	Lab	378	0.84
10	Wirral West	Lab Margaret Greenwood	Con	417	1.00
11	Morley and Outwood	Con Andrea Jenkyns	Lab	422	0.87
12	Halifax	Lab Holly Lynch	Con	428	0.98
13	Brentford and Isleworth	Lab Ruth Cadbury	Con	465	0.81
14	Plymouth, Sutton and Devonport	Con Oliver Colvile	Lab	523	1.09
15	Fermanagh and South Tyrone	UUP Tom Elliott	SF	530	1.04
16	Thurrock	Con Jackie Doyle-Price	Lab	536	1.08
17	Ilford North	Lab Wes Streeting	Con	589	1.20
18	Cambridge	Lab Daniel Zeichner	LD	599	1.16
19	Newcastle-under-Lyme	Lab Paul Farrelly	Con	650	1.51
20	Brighton, Kemptown	Con Simon Kirby	Lab	690	1.52
21	Telford	Con Lucy Allan	Lab	730	1.80
22	Eastbourne	Con Caroline Ansell	LD	733	1.39
23	Barrow and Furness	Lab John Woodcock	Con	795	1.84
24	Dumfriesshire, Clydesdale and Tweeddale	Con David Mundell	SNP	798	1.53
25	Bolton West	Con Chris Green	Lab	801	1.65
26	Wolverhampton South West	Lab Rob Marris	Con	801	1.99
27	Weaver Vale	Con Graham Evans	Lab	806	1.72
28	Orkney and Shetland	LD Alistair Carmichael	SNP	817	3.59
29	Belfast South	SDLP Alasdair McDonnell	DUP	906	2.33
30	South Antrim	UUP Danny Kinahan	DUP	949	2.60
31	Plymouth, Moor View	Con Johnny Mercer	Lab	1,026	2.41
32	Lewes	Con Maria Caulfield	LD	1,083	2.14
33	Enfield North	Lab Joan Ryan	Con	1,086	2.35
34	Bedford	Con Richard Fuller	Lab	1,097	2.38
35	Hampstead and Kilburn	Lab Tulip Siddiq	Con	1,138	2.11
36	Hove	Lab Peter Kyle	Con	1,236	2.37
37	Lancaster and Fleetwood	Lab Catherine Smith	Con	1,265	3.03
38	Southport	LD John Pugh	Con	1,322	3.00
39	Lincoln	Con Karl McCartney	Lab	1,443	3.08
40	Dewsbury	Lab Paula Sherriff	Con	1,451	2.71
41	Thornbury and Yate	Con Luke Hall	LD	1,495	3.08
42	Carshalton and Wallington	LD Tom Brake	Con	1,510	3.17
43	Wrexham	Lab Ian Lucas	Con	1,831	5.60
44	North East Derbyshire	Lab Natascha Engel	Con	1,883	3.93
45	Peterborough	Con Stewart Jackson	Lab	1,925	4.09
46	Bridgend	Lab Madeleine Moon	Con	1,927	4.88
47	Walsall North	Lab David Winnick	Con	1,937	5.25
48	Westminster North	Lab Karen Buck	Con	1,977	5.00
49	Twickenham	Con Tania Mathias	LD	2,017	3.25
50	Cardiff North	Con Craig Williams	Lab	2,137	4.18

Single-member seats with a recorded contest. Percentages are of valid votes.

Official results House of Commons Library and UK Parliament election results data. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. How we use this data