On Thursday 8 June 2017, the 2017 United Kingdom general election was held in Wales, to elect all 650 members of the House of Commons, with 40 constituencies being in Wales. The election for each seat was conducted on the basis of first-past-the-post.

The Labour party won the most votes in Wales, with the Conservatives winning overall across the UK.

Results summary

+PartySeatsAggregate Votes Total Gains Losses Net Of all (%) Total Of all (%) Difference 28 3 0 3 70.0 771,354 48.9 12.1 8 0 3 3 20.0 528,839 33.6 6.3 4 1 0 1 10.0 164,466 10.4 1.7 0 0 1 1 0.0 71,039 4.5 2.0 0 0 0 — 31,376 2.0 11.6 0 0 0 — 5,128 0.3 2.2   Others 0 0 0 — 3,612 0.2 0.1 Total 40 1,575,814 68.6 2.9

Analysis The Labour Party remained the largest party in Wales and won an even larger majority of seats after gaining three seats from the Conservatives. Its 48.9% of the vote and total of 771,354 popular votes were its best in Wales since 1997.

The Conservative Party, who entered the campaign with high hopes of making gains, saw its representation reduced back to the levels it won in the 2010 general election.

Plaid Cymru won back Ceredigion after the constituency's 12 years in Liberal Democrat hands, and brought its tally up to four seats, which was its best result showing since 2001 and one of its joint best in history.

Plaid Cymru's gain in Ceredigion and the Liberal Democrats' failure to make gains elsewhere meant that this was the first time in Welsh electoral history where there were no Liberal or Liberal Democrat MPs elected to represent a Welsh constituency in a Westminster Parliamentary election.

Target seats

Labour Gower, Conservative, 0.1% (Labour Gain) Vale of Clwyd, Conservative, 0.7% (Labour Gain) Cardiff North, Conservative, 4.2% (Labour Gain)

Conservative Bridgend, Labour, 4.9% (Labour Hold) Wrexham, Labour, 5.6% (Labour Hold) Clwyd South, Labour, 6.9% (Labour Hold) Delyn, Labour, 7.8% (Labour Hold) Alyn and Deeside, Labour, 8.1% (Labour Hold) Newport West, Labour, 8.7% (Labour Hold)

Plaid Cymru Ynys Môn, Labour, 0.7% (Labour Hold) Ceredigion, Liberal Democrats, 8.2% (Plaid Gain)

Opinion polling

Date(s)conductedPolling organisation/clientSample size Lab Con UKIP Plaid Lib Dem Green OthersLead8 June General Election results 1,575,81448.9% 33.6% 2.0% 10.4% 4.5% 0.3% 0.2% 15.3%5–7 June 2017YouGov/ITV1,07446%34%5%9%5%1%12%29–31 May 2017YouGov/ITV1,01446%35%5%8%5%0%0%11%18–21 May 2017YouGov/ITV1,02544%34%5%9%6%1%1%10%5–7 May 2017YouGov/ITV1,01835%41%4%11%7%1%1%6%4 May 20172017 Welsh local elections19–21 April 2017YouGov/Welsh Political Barometer1,02930%40%6%13%8%2%1%10%18 AprPrime Minister Theresa May announces her intention to seek a general election to be held on 8 June 20173–6 Jan 2017YouGov/Welsh Political Barometer1,03433%28%13%13%9%2%05%18–21 Sep 2016YouGov/Welsh Political Barometer1,00135%29%14%13%7%2%06%13 Jul 2016Theresa May becomes the prime minister of the United Kingdom30 Jun–4 Jul 2016YouGov/Welsh Political Barometer1,01034%23%16%16%8%1%2%11%5 May 2016Welsh Assembly election and Ogmore by-election19–22 Apr 2016YouGov/Welsh Political Barometer1,00137%23%17%13%7%2%1%14%7–11 Apr 2016YouGov/ITV Wales1,01138%22%18%13%6%2%1%16%7–18 Mar 2016 Welsh Election Study 3,272 36% 25% 16% 14% 6% 3% 11%9–11 Feb 2016YouGov/Welsh Political Barometer1,02437%27%18%13%4%1%-10%30 Nov–4 Dec 2015YouGov/Welsh Political Barometer1,00537%27%17%12%4%2%-10%21–24 Sep 2015YouGov/Welsh Political Barometer1,15142%26%16%10%5%2%-16%24–26 Jun 2015YouGov/Welsh Political Barometer1,15137%28%15%12%4%3%1%9%7 May 2015General Election results1,498,433 36.9% 27.2% 13.6% 12.1% 6.5% 2.6% 1.0%9.7%

See also 2017 United Kingdom general election in England 2017 United Kingdom general election in Scotland 2017 United Kingdom general election in Northern Ireland List of MPs for constituencies in Wales (2017–2019)

Notes

References