Closest seats at the 1970 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	Ipswich	Con	Lab	13	0.02
2	King'S Lynn	Con	Lab	33	0.07
3	Brighouse and Spenborough	Con	Lab	59	0.12
4	Watford	Lab	Con	76	0.18
5	Leicestersouth West	Con	Lab	106	0.33
6	Birmingham Yardley	Con	Lab	120	0.28
7	Huddersfield West	Lab	Con	193	0.47
8	Halifax	Lab	Con	198	0.41
9	Ealing North	Lab	Con	320	0.69
10	Dudley	Lab	Con	336	0.57
11	North Devon	Lib	Con	369	0.86
12	Middlesbrough West	Con	Lab	388	0.87
13	Bristol North East	Con	Lab	462	1.00
14	Sowerby	Lab	Con	469	1.24
15	Bolton East	Con	Lab	471	1.05
16	Hampstead	Con	Lab	474	1.04
17	Brentford and Chiswick	Lab	Con	513	1.86
18	The Wrekin	Con	Lab	518	1.00
19	Walthamstow East	Con	Lab	528	1.73
20	Loughborough	Lab	Con	534	1.06
21	Roxburgh Selkirk and Peebles	Lib	Con	550	1.19
22	Dartford	Con	Lab	560	0.93
23	Accrington	Lab	Con	594	1.45
24	Glasgow Pollok	Lab	Con	603	1.44
25	Keighley	Con	Lab	616	1.49
26	Woolwich West	Lab	Con	618	1.49
27	North Cornwall	Lib	Con	630	1.54
28	Lambeth Norwood	Lab	Con	631	1.80
29	Berwick and East Lothian	Lab	Con	641	1.38
30	Acton	Lab	Con	660	2.27
31	Sheffield Heeley	Con	Lab	693	1.17
32	Bebington	Con	Lab	725	1.17
33	Western Isles	SNP	Lab	726	4.77
34	Plymouth Sutton	Lab	Con	747	1.29
35	Lewisham West	Con	Lab	760	1.97
36	Oldham East	Lab	Con	760	2.28
37	Ross and Cromarty	Con	Lib	801	4.14
38	Norwich South	Con	Lab	826	2.27
39	Glasgow Kelvingrove	Lab	Con	832	7.31
40	Colne Valley	Lab	Lib	856	1.81
41	Stockport North	Con	Lab	871	2.21
42	Leicester North East	Lab	Con	891	2.90
43	Camberwell Dulwich	Lab	Con	895	2.10
44	Heywood and Royton	Lab	Con	903	1.65
45	Conway	Con	Lab	903	2.26
46	Portsmouth West	Lab	Con	955	2.81
47	Birmingham Ladywood	Lab	Lib	980	8.39
48	Bilston	Lab	Con	1,000	1.87
49	Lewisham North	Lab	Con	1,027	2.90
50	Middleton and Prestwick	Con	Lab	1,042	1.82

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