Thanks to @HarryHayfield who has done this notional result of if we in Britain had the same electoral college system as America
Result based on GE 2015 VOTES
(Rules: Each county’s votes are tallied and the party with the most votes wins the seats allocated to that county)
Conservative wins: Avon (7), Bedfordshire (6), Berkshire (8), Buckinghamshire (7), Cambridgeshire (7), Cheshire (11), Cornwall (6), Cumbria (6), Derbyshire (11), Devon (12), Dorset (8), East Sussex (8), Essex (18), Gloucestershire (8), Hampshire (18), Herefordshire and Worcestershire (8), Hertfordshire (11), Humberside (10), Isle of Wight (1), Kent (17), Lancashire (16), Leicestershire (10), Lincolnshire (7), Norfolk (9), North Yorkshire (8), Northamptonshire (7), Northumberland (4), Oxfordshire (6), Powys (2), Shropshire (5), Somerset (7), South London (29), Staffordshire (12), Suffolk (7), Surrey (11), Warwickshire (5), West Sussex (8), Wiltshire (7)
Labour wins: Cleveland (6), Clwyd (6), Durham (7), Dyfed (5), Greater Manchester (27), Gwent (6), Merseyside (15), Mid Glamorgan (7), North London (44), Nottinghamshire (11), South Glamorgan (5), South Yorkshire (14), Tyne and Wear (12), West Glamorgan (5), West Midlands (28), West Yorkshire (22)
Scottish National Party wins: Scottish Borders (1), Central (2), Tayside (4), Dumfries and Galloway (2), Fife (4), Grampian (6), Highlands and Islands (5), Lothian (9), Strathclyde (26)
Plaid Cymru wins: Gwynedd (4)
Totals: Con 349, Lab 220, SNP 59, Northern Ireland 18, Plaid 4 (Con majority of 48)
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(Based on most recent poll suggesting Con lead of 14% = 4% swing to Con)
Con GAIN: Clwyd, Dyfed, Nottinghamshire, South Glamorgan
Totals: Con 376, Lab 193, SNP 59, Northern Ireland 18, Plaid 4 (Con majority of 102)