Notional results for a UK general election on 12 December 2019 North West, England - by party
| Party | Constituencies contested | Votes | Vote share | Constituencies won |
| Labour | 72 | 1,638,258 | 46.5% | 41 |
| Conservative | 72 | 1,321,072 | 37.5% | 31 |
| Liberal Democrat | 72 | 277,505 | 7.9% | 0 |
| The Brexit Party | 63 | 136,196 | 3.9% | 0 |
| Green Party | 72 | 86,815 | 2.5% | 0 |
| Birkenhead Social Justice Party | 1 | 7,285 | 0.2% | 0 |
| Liberal | 8 | 4,910 | 0.1% | 0 |
| UK Independence Party | 5 | 2,333 | 0.1% | 0 |
| Proud of Oldham & Saddleworth | 2 | 1,606 | 0.0% | 0 |
| Burnley and Padiham Independent Party | 1 | 1,162 | 0.0% | 0 |
| Cumbria First | 3 | 1,070 | 0.0% | 0 |
| Animal Welfare Party | 1 | 658 | 0.0% | 0 |
| Official Monster Raving Loony Party | 1 | 324 | 0.0% | 0 |
| Social Democratic Party | 1 | 168 | 0.0% | 0 |
| Libertarian Party | 1 | 149 | 0.0% | 0 |
| Renew | 1 | 137 | 0.0% | 0 |
| Women's Equality Party | 1 | 130 | 0.0% | 0 |
| Socialist Equality Party | 1 | 107 | 0.0% | 0 |
| Communist League Election Campaign | 1 | 58 | 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.