Notional results for a UK general election on 12 December 2019 Wales - by party

Parties Constituencies Majorities Vote shares of winning candidates Turnouts

Party Constituencies contested Votes Vote share Constituencies won
Labour 32 632,035 40.9% 18
Conservative 32 557,234 36.1% 12
Plaid Cymru 31 153,265 9.9% 2
Liberal Democrat 29 92,171 6.0% 0
The Brexit Party 30 83,909 5.4% 0
Green Party 21 15,828 1.0% 0
Gwlad Gwlad 3 1,515 0.1% 0
The Cynon Valley Party 2 1,322 0.1% 0
Official Monster Raving Loony Party 1 345 0.0% 0
Christian Party, Proclaiming Christ's Lordship 1 245 0.0% 0
Social Democratic Party 2 181 0.0% 0
The Socialist Party of Great Britain 1 88 0.0% 0

Estimates of the 2019 general election result in new constituencies

BBC News, ITV News, Sky News and the Press Association have together produced estimates of the 2019 general election result as if the new constituencies recommended by the separate Parliamentary Boundary Commissions for England, Scotland, Wales and Northern Ireland had then been in existence.

Rallings & Thrasher, Professor David Denver (Scotland), Nicholas Whyte (NI) for Sky News, PA, BBC News and ITV News.

An explanation of the methods used and the electoral impact of the changes can be found in the linked document.