Wales, 2017 vs 2019: seat-by-seat change

Every constituency in Wales compared between the 2017 and 2019 general elections: which seats changed hands and how far each swung.

Constituency	2017	2019	Majority	Con–Lab swing
Aberavon	Lab	Lab	33.2%	−8.6
Aberconwy	Con	Con	6.4%	−2.2
Alyn and Deeside	Lab	Lab	0.5%	−5.6
Arfon	PC	PC	9.6%	−1.9
Blaenau Gwent	Lab	Lab	28.6%	−6.5
Brecon and Radnorshire	Con	Con	17.3%	−6.4
Bridgend	Lab	Con gain	2.7%	−6.8
Caerphilly	Lab	Lab	17.0%	−6.1
Cardiff Central	Lab	Lab	41.1%	−0.8
Cardiff North	Lab	Lab	13.3%	+2.6
Cardiff South and Penarth	Lab	Lab	25.2%	−2.1
Cardiff West	Lab	Lab	23.8%	−1.6
Carmarthen East and Dinefwr	PC	PC	4.4%	−8.5
Carmarthen West and South Pembrokeshire	Con	Con	18.4%	−5.5
Ceredigion	PC	PC	15.8%	−4.1
Clwyd South	Lab	Con gain	3.4%	−7.5
Clwyd West	Con	Con	16.8%	−4.2
Cynon Valley	Lab	Lab	29.2%	−6.2
Delyn	Lab	Con gain	2.3%	−6.5
Dwyfor Meirionnydd	PC	PC	15.8%	−5.3
Gower	Lab	Lab	4.1%	−1.5
Islwyn	Lab	Lab	15.9%	−7.9
Llanelli	Lab	Lab	12.2%	−8.8
Merthyr Tydfil and Rhymney	Lab	Lab	32.9%	−7.9
Monmouth	Con	Con	19.9%	−1.7
Montgomeryshire	Con	Con	35.5%	−3.1
Neath	Lab	Lab	15.3%	−8.8
Newport East	Lab	Lab	5.5%	−8.1
Newport West	Lab	Lab	2.1%	−5.5
Ogmore	Lab	Lab	22.1%	−7.6
Pontypridd	Lab	Lab	15.1%	−6.8
Preseli Pembrokeshire	Con	Con	11.9%	−5.6
Rhondda	Lab	Lab	38.6%	−7.7
Swansea East	Lab	Lab	23.7%	−6.9
Swansea West	Lab	Lab	22.7%	−2.9
Torfaen	Lab	Lab	10.1%	−8.3
Vale of Clwyd	Lab	Con gain	4.9%	−5.5
Vale of Glamorgan	Con	Con	6.5%	−1.2
Wrexham	Lab	Con gain	6.4%	−5.8
Ynys Môn	Lab	Con gain	5.4%	−9.7

← Whole UK

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