Notional results for a UK general election on 12 December 2019 Yorkshire and The Humber, England - Elections contested by Liberal Democrat
A notional general election to the 58th Parliament of the United Kingdom with an electorate of 47,558,398, having 32,014,119 valid votes.
| Constituency | Electorate | Turnout | Votes | Vote share | Position |
| Barnsley North | 76,794 | 57.9% | 1,588 | 3.6% | 4th |
| Barnsley South | 75,896 | 49.4% | 1,311 | 3.5% | 4th |
| Beverley and Holderness | 71,102 | 69.6% | 4,579 | 9.3% | 3rd |
| Bradford East | 72,150 | 59.6% | 3,302 | 7.7% | 3rd |
| Bradford South | 70,890 | 57.7% | 1,519 | 3.7% | 4th |
| Bradford West | 71,258 | 62.1% | 1,349 | 3.0% | 4th |
| Bridlington and The Wolds | 72,501 | 64.1% | 3,479 | 7.5% | 3rd |
| Brigg and Immingham | 71,628 | 66.0% | 2,067 | 4.4% | 3rd |
| Calder Valley | 75,987 | 74.3% | 2,858 | 5.1% | 3rd |
| Colne Valley | 71,518 | 72.4% | 3,630 | 7.0% | 3rd |
| Dewsbury and Batley | 70,226 | 65.6% | 1,156 | 2.5% | 5th |
| Doncaster Central | 75,007 | 61.4% | 1,884 | 4.1% | 4th |
| Doncaster East and the Isle of Axholme | 70,113 | 61.4% | 1,912 | 4.4% | 4th |
| Doncaster North | 71,739 | 55.9% | 1,446 | 3.6% | 4th |
| Goole and Pocklington | 76,337 | 65.4% | 3,882 | 7.8% | 3rd |
| Great Grimsby and Cleethorpes | 77,050 | 54.1% | 2,052 | 4.9% | 3rd |
| Halifax | 74,563 | 64.1% | 2,302 | 4.8% | 4th |
| Harrogate and Knaresborough | 75,800 | 73.3% | 20,086 | 36.2% | 2nd |
| Huddersfield | 76,044 | 64.9% | 2,449 | 5.0% | 3rd |
| Keighley and Ilkley | 72,954 | 72.1% | 2,573 | 4.9% | 3rd |
| Kingston upon Hull East | 72,622 | 46.8% | 1,685 | 5.0% | 4th |
| Kingston upon Hull North and Cottingham | 76,039 | 59.1% | 2,915 | 6.5% | 4th |
| Kingston upon Hull West and Haltemprice | 74,321 | 56.0% | 3,837 | 9.2% | 4th |
| Leeds Central and Headingley | 75,396 | 57.9% | 4,884 | 11.2% | 3rd |
| Leeds East | 75,330 | 59.0% | 1,626 | 3.7% | 4th |
| Leeds North East | 70,976 | 71.2% | 5,665 | 11.2% | 3rd |
| Leeds North West | 71,607 | 77.7% | 8,212 | 14.8% | 3rd |
| Leeds South | 74,726 | 57.9% | 1,922 | 4.4% | 4th |
| Leeds South West and Morley | 71,376 | 61.1% | 1,207 | 2.8% | 4th |
| Leeds West and Pudsey | 70,270 | 68.3% | 1,747 | 3.6% | 3rd |
| Normanton and Hemsworth | 75,388 | 57.5% | 1,831 | 4.2% | 5th |
| Ossett and Denby Dale | 71,595 | 67.9% | 2,400 | 4.9% | 4th |
| Penistone and Stocksbridge | 71,377 | 69.4% | 5,054 | 10.2% | 3rd |
| Pontefract, Castleford and Knottingley | 72,751 | 56.7% | 2,799 | 6.8% | 4th |
| Rawmarsh and Conisbrough | 70,272 | 57.7% | 1,500 | 3.7% | 4th |
| Richmond and Northallerton | 72,744 | 71.3% | 6,475 | 12.5% | 3rd |
| Rotherham | 75,345 | 57.8% | 2,717 | 6.2% | 4th |
| Rother Valley | 70,184 | 64.8% | 2,195 | 4.8% | 4th |
| Scarborough and Whitby | 73,862 | 67.3% | 3,038 | 6.1% | 3rd |
| Scunthorpe | 74,278 | 63.6% | 1,249 | 2.6% | 4th |
| Selby | 74,761 | 70.6% | 3,165 | 6.0% | 3rd |
| Sheffield Brightside and Hillsborough | 71,154 | 56.7% | 1,570 | 3.9% | 4th |
| Sheffield Central | 70,453 | 54.0% | 2,070 | 5.4% | 4th |
| Sheffield Hallam | 76,637 | 78.4% | 19,896 | 33.1% | 2nd |
| Sheffield Heeley | 74,614 | 61.2% | 3,070 | 6.7% | 4th |
| Sheffield South East | 76,223 | 61.5% | 2,186 | 4.7% | 4th |
| Shipley | 74,095 | 72.9% | 3,188 | 5.9% | 3rd |
| Skipton and Ripon | 76,758 | 74.0% | 8,634 | 15.2% | 3rd |
| Spen Valley | 72,169 | 65.4% | 2,755 | 5.8% | 4th |
| Thirsk and Malton | 76,623 | 68.1% | 6,502 | 12.5% | 3rd |
| Wakefield and Rothwell | 73,968 | 66.4% | 5,361 | 10.9% | 3rd |
| Wetherby and Easingwold | 71,455 | 76.1% | 4,305 | 7.9% | 3rd |
| York Central | 74,854 | 66.9% | 3,919 | 7.8% | 3rd |
| York Outer | 72,720 | 75.3% | 10,222 | 18.7% | 3rd |
Turnout as calculated by the House of Commons Library, is the total number of votes cast and not spoiled, divided by the size of the electorate.
Under section 13(b) of the Representation of the People Act 1985, a candidate gaining 5% or less of the vote share will forfeit their deposit.
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.