Closest seats at the 1979 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	Preston North	Con	Lab	29	0.07
2	Bury and Radcliffe	Lab	Con	38	0.06
3	Belfast East	DUP	UUP	64	0.13
4	Keighley	Lab	Con	78	0.18
5	Paddington	Con	Lab	106	0.30
6	Camberwell Dulwich	Lab	Con	122	0.28
7	Birmingham Northfield	Con	Lab	204	0.37
8	Derby North	Lab	Con	214	0.33
9	Luton West	Con	Lab	246	0.51
10	Kingswood	Con	Lab	303	0.58
11	Battersea South	Lab	Con	332	1.07
12	Stockport North	Lab	Con	333	0.78
13	Isle of Wight	Lib	Con	352	0.47
14	Swansea West	Lab	Con	401	0.76
15	Moray and Nairn	Con	SNP	422	1.19
16	Nelson and Colne	Con	Lab	436	1.12
17	Bebington and Ellesmere Port	Con	Lab	486	0.66
18	Brigg and Scunthorpe	Con	Lab	486	0.68
19	Birmingham Perry Barr	Lab	Con	491	1.25
20	East Aberdeenshire	Con	SNP	558	1.42
21	Bolton West	Lab	Con	600	1.51
22	Lincoln	Con	Lab	602	1.42
23	Mitcham and Morden	Lab	Con	618	1.29
24	Preston South	Lab	Con	621	1.55
25	Birmingham Erdington	Lab	Con	680	1.56
26	Hornchurch	Con	Lab	769	1.62
27	Aberdeen South	Con	Lab	772	1.51
28	Banff	Con	SNP	799	3.37
29	Luton East	Con	Lab	847	2.08
30	Ormskirk	Lab	Con	858	1.15
31	Belper	Con	Lab	882	1.44
32	South Angus	Con	SNP	963	2.10
33	The Wrekin	Con	Lab	965	1.35
34	Clackmannan and East Stirlingshire	Lab	SNP	984	1.81
35	Belfast North	DUP	UUP	995	2.35
36	Plymouth Devonport	Lab	Con	1,001	2.87
37	Lewisham West	Lab	Con	1,050	2.33
38	Darlington	Lab	Con	1,052	2.12
39	Middleton and Prestwick	Lab	Con	1,098	1.80
40	Stockport South	Lab	Con	1,125	3.00
41	Dudley West	Con	Lab	1,139	1.92
42	Birmingham Yardley	Con	Lab	1,164	2.74
43	Sowerby	Con	Lab	1,180	2.97
44	Edinburgh Pentlands	Con	Lab	1,198	2.66
45	Norwich South	Lab	Con	1,198	3.31
46	Halifax	Lab	Con	1,234	2.52
47	York	Lab	Con	1,250	2.09
48	Hertford Stevenage	Con	Lab	1,296	1.84
49	Eton and Slough	Lab	Con	1,340	2.76
50	Harlow	Lab	Con	1,392	2.62

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