Biggest majorities at the 1945 general election

The safest wins: constituencies won by the largest share of the vote in each general election.

#	Constituency	Winner	Runner-up	Majority	%
1	West Ham Silvertown	Lab	Con	8,864	86.45
2	Poplar South Poplar	Lab	Con	10,217	78.45
3	West Ham Plaistow	Lab	Con	14,888	75.14
4	Stepney Whitechapel and St George'S	Lab	Con	9,347	74.55
5	Monmouthshire Abertillery	Lab	Con	24,193	73.23
6	Yorkshire (West Riding) Normanton	Lab	Con	22,979	68.60
7	Merthyr Tydfil Aberdare	Lab	Con	27,969	68.51
8	Poplar Bow and Bromley	Lab	Con	8,907	68.22
9	Stepney Limehouse	Lab	Con	6,780	67.69
10	Dagenham	Lab	Con	29,539	67.39
11	Yorkshire (West Riding) Wentworth	Lab	Con	35,410	67.13
12	Monmouthshire Bedwellty	Lab	Con	23,839	64.22
13	Derbyshire Clay Cross	Lab	Con	21,517	64.12
14	Merthyr Tydfil Merthyr	Lab	Oth	19,186	62.76
15	Yorkshire (West Riding) Hemsworth	Lab	Con	26,206	62.75
16	Sheffield Attercliffe	Lab	Con	18,092	62.72
17	Carmarthenshire Llanelli	Lab	Con	34,117	62.13
18	Camberwell North	Lab	Con	5,792	61.79
19	Glamorganshire Caerphilly	Lab	Con	21,969	60.44
20	Monmouthshire Ebbw Vale	Lab	Con	20,451	60.21
21	Durham Seaham	Lab	Con	32,257	60.15
22	Glasgow Gorbals	Lab	Con	15,804	60.00
23	Glamorganshire Neath	Lab	Con	29,491	58.89
24	Glamorganshire Ogmore	Lab	Con	25,003	58.41
25	Bermondsey Rotherhithe	Lab	Con	7,164	58.16
26	Leeds South East	Lab	Con	15,845	55.90
27	Tottenham South	Lab	Con	13,855	55.40
28	Monmouthshire Pontypool	Lab	Con	19,383	54.56
29	Barking	Lab	Con	18,911	54.39
30	West Ham Stratford	Lab	Con	8,322	54.06
31	Southwark South East	Lab	Con	6,718	53.83
32	Durham Chester Le Street	Lab	Con	23,560	53.53
33	Bermondsey West Bermondsey	Lab	Nat Lib	5,901	52.31
34	Swansea East	Lab	Nat Lib	13,025	51.63
35	University of Wales	Lib	Oth	3,543	51.09
36	Kensington South	Con	Lab	16,152	50.85
37	Glamorganshire Pontypridd	Lab	Con	20,563	50.71
38	Yorkshire (West Riding) Rother Valley	Lab	Con	29,830	50.42
39	Nottinghamshire Mansfield	Lab	Con	28,811	50.18
40	West Ham Upton	Lab	Con	9,396	49.02
41	Lancashire Ince	Lab	Con	18,827	48.80
42	Rotherham	Lab	Nat Lib	23,234	48.33
43	Yorkshire (West Riding) Rothwell	Lab	Con	28,459	48.07
44	East Ham South	Lab	Con	12,434	48.00
45	Shoreditch	Lab	Nat Lib	7,511	47.92
46	Battersea North	Lab	Con	9,101	47.80
47	Islington West	Lab	Con	7,406	47.52
48	Walthamstow West	Lab	Lib	12,700	47.44
49	Bristol East	Lab	Con	17,902	47.05
50	Lanarkshire Hamilton	Lab	Con	12,789	46.95

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