| Constituency | Tactical vote |
| Aberavon | Labour |
| Aberconwy | Labour |
| Aberdeen North | SNP |
| Aberdeen South | SNP |
| Airdrie and Shotts | None |
| Aldershot | Labour |
| Aldridge-Brownhills | Labour |
| Altrincham and Sale West | Labour |
| Alyn and Deeside | Labour |
| Amber Valley | Labour |
| Angus | SNP |
| Arfon | None |
| Argyll and Bute | SNP |
| Arundel and South Downs | Lib Dem |
| Ashfield | Not sure |
| Ashford | Labour |
| Ashton-Under-Lyne | Labour |
| Aylesbury | Labour |
| Ayr, Carrick and Cumnock | SNP |
| Banbury | Labour |
| Banff and Buchan | SNP |
| Barking | Labour |
| Barnsley Central | Labour |
| Barnsley East | Labour |
| Barrow and Furness | Labour |
| Basildon and Billericay | Labour |
| Basingstoke | Labour |
| Bassetlaw | Labour |
| Bath | Lib Dem |
| Batley and Spen | Labour |
| Battersea | Labour |
| Beaconsfield | Not sure |
| Beckenham | Labour |
| Bedford | Labour |
| Belfast East | Alliance |
| Belfast North | Sinn Féin |
| Belfast South | SDLP |
| Belfast West | Not sure |
| Bermondsey and Old Southwark | None |
| Berwickshire, Roxburgh and Selkirk | SNP |
| Berwick-Upon-Tweed | Not sure |
| Bethnal Green and Bow | Labour |
| Beverley and Holderness | Labour |
| Bexhill and Battle | Labour |
| Bexleyheath and Crayford | Labour |
| Birkenhead | Not sure |
| Birmingham, Edgbaston | Labour |
| Birmingham, Erdington | Labour |
| Birmingham, Hall Green | Labour |
| Birmingham, Hodge Hill | Labour |
| Birmingham, Ladywood | Labour |
| Birmingham, Northfield | Labour |
| Birmingham, Perry Barr | Labour |
| Birmingham, Selly Oak | Labour |
| Birmingham, Yardley | Labour |
| Bishop Auckland | Labour |
| Blackburn | Labour |
| Blackley and Broughton | Labour |
| Blackpool North and Cleveleys | Labour |
| Blackpool South | Labour |
| Blaenau Gwent | Labour |
| Blaydon | Labour |
| Blyth Valley | Labour |
| Bognor Regis and Littlehampton | Labour |
| Bolsover | Labour |
| Bolton North East | Labour |
| Bolton South East | Labour |
| Bolton West | Labour |
| Bootle | Labour |
| Boston and Skegness | Labour |
| Bosworth | Not sure |
| Bournemouth East | Labour |
| Bournemouth West | Labour |
| Bracknell | Labour |
| Bradford East | Labour |
| Bradford South | Labour |
| Bradford West | Labour |
| Braintree | Labour |
| Brecon and Radnorshire | Lib Dem |
| Brent Central | Labour |
| Brentford and Isleworth | Labour |
| Brent North | Labour |
| Brentwood and Ongar | Not sure |
| Bridgend | Labour |
| Bridgwater and West Somerset | Labour |
| Brigg and Goole | Labour |
| Brighton, Kemptown | Labour |
| Brighton, Pavilion | None |
| Bristol East | Labour |
| Bristol North West | Labour |
| Bristol South | Labour |
| Bristol West | None |
| Broadland | Labour |
| Bromley and Chislehurst | Labour |
| Bromsgrove | Labour |
| Broxbourne | Labour |
| Broxtowe | Labour |
| Buckingham | Lib Dem |
| Burnley | Labour |
| Burton | Labour |
| Bury North | Labour |
| Bury South | Labour |
| Bury St Edmunds | Not sure |
| Caerphilly | Labour |
| Caithness, Sutherland and Easter Ross | None |
| Calder Valley | Labour |
| Camberwell and Peckham | Labour |
| Camborne and Redruth | Labour |
| Cambridge | None |
| Cannock Chase | Labour |
| Canterbury | Labour |
| Cardiff Central | Labour |
| Cardiff North | Labour |
| Cardiff South and Penarth | Labour |
| Cardiff West | Labour |
| Carlisle | Labour |
| Carmarthen East and Dinefwr | Plaid |
| Carmarthen West and South Pembrokeshire | Labour |
| Carshalton and Wallington | Lib Dem |
| Castle Point | Labour |
| Central Ayrshire | SNP |
| Central Devon | Labour |
| Central Suffolk and North Ipswich | Labour |
| Ceredigion | Plaid |
| Charnwood | Labour |
| Chatham and Aylesford | Labour |
| Cheadle | Lib Dem |
| Chelmsford | Lib Dem |
| Chelsea and Fulham | Not sure |
| Cheltenham | Lib Dem |
| Chesham and Amersham | Lib Dem |
| Chesterfield | Labour |
| Chichester | Lib Dem |
| Chingford and Woodford Green | Labour |
| Chippenham | Lib Dem |
| Chipping Barnet | Labour |
| Chorley | None |
| Christchurch | Lib Dem |
| Cities of London and Westminster | Not sure |
| City of Chester | Labour |
| City of Durham | Labour |
| Clacton | Labour |
| Cleethorpes | Labour |
| Clwyd South | Labour |
| Clwyd West | Labour |
| Coatbridge, Chryston and Bellshill | None |
| Colchester | Labour |
| Colne Valley | Labour |
| Congleton | Labour |
| Copeland | Labour |
| Corby | Labour |
| Coventry North East | Labour |
| Coventry North West | Labour |
| Coventry South | Labour |
| Crawley | Labour |
| Crewe and Nantwich | Labour |
| Croydon Central | Labour |
| Croydon North | Labour |
| Croydon South | Labour |
| Cumbernauld, Kilsyth and Kirkintilloch East | None |
| Cynon Valley | Labour |
| Dagenham and Rainham | Labour |
| Darlington | Labour |
| Dartford | Labour |
| Daventry | Labour |
| Delyn | Labour |
| Denton and Reddish | Labour |
| Derby North | Labour |
| Derbyshire Dales | Labour |
| Derby South | Labour |
| Devizes | Not sure |
| Dewsbury | Labour |
| Doncaster Central | Labour |
| Doncaster North | Labour |
| Don Valley | Labour |
| Dover | Labour |
| Dudley North | Labour |
| Dudley South | Labour |
| Dulwich and West Norwood | None |
| Dumfries and Galloway | SNP |
| Dumfriesshire, Clydesdale and Tweeddale | SNP |
| Dundee East | SNP |
| Dundee West | None |
| Dunfermline and West Fife | SNP |
| Dwyfor Meirionnydd | Plaid |
| Ealing Central and Acton | Labour |
| Ealing North | Labour |
| Ealing, Southall | Labour |
| Easington | Labour |
| East Antrim | Alliance |
| Eastbourne | Lib Dem |
| East Devon | Independent |
| East Dunbartonshire | None |
| East Ham | Labour |
| East Hampshire | Lib Dem |
| East Kilbride, Strathaven and Lesmahagow | SNP |
| Eastleigh | Lib Dem |
| East Londonderry | Not sure |
| East Lothian | SNP |
| East Renfrewshire | SNP |
| East Surrey | Lib Dem |
| East Worthing and Shoreham | Labour |
| East Yorkshire | Labour |
| Eddisbury | Not sure |
| Edinburgh East | None |
| Edinburgh North and Leith | SNP |
| Edinburgh South | None |
| Edinburgh South West | SNP |
| Edinburgh West | None |
| Edmonton | Labour |
| Ellesmere Port and Neston | Labour |
| Elmet and Rothwell | Labour |
| Eltham | Labour |
| Enfield North | Labour |
| Enfield, Southgate | Labour |
| Epping Forest | Labour |
| Epsom and Ewell | Lib Dem |
| Erewash | Labour |
| Erith and Thamesmead | Labour |
| Esher and Walton | Lib Dem |
| Exeter | Labour |
| Falkirk | SNP |
| Fareham | Not sure |
| Faversham and Mid Kent | Labour |
| Feltham and Heston | Labour |
| Fermanagh and South Tyrone | Sinn Féin |
| Filton and Bradley Stoke | Labour |
| Finchley and Golders Green | Lib Dem |
| Folkestone and Hythe | Labour |
| Forest of Dean | Labour |
| Foyle | None |
| Fylde | Labour |
| Gainsborough | Labour |
| Garston and Halewood | Labour |
| Gateshead | Labour |
| Gedling | Labour |
| Gillingham and Rainham | Labour |
| Glasgow Central | None |
| Glasgow East | None |
| Glasgow North | None |
| Glasgow North East | None |
| Glasgow North West | None |
| Glasgow South | None |
| Glasgow South West | None |
| Glenrothes | None |
| Gloucester | Labour |
| Gordon | SNP |
| Gosport | Labour |
| Gower | Labour |
| Grantham and Stamford | Labour |
| Gravesham | Labour |
| Great Grimsby | Labour |
| Great Yarmouth | Labour |
| Greenwich and Woolwich | Labour |
| Guildford | Lib Dem |
| Hackney North and Stoke Newington | Labour |
| Hackney South and Shoreditch | Labour |
| Halesowen and Rowley Regis | Labour |
| Halifax | Labour |
| Haltemprice and Howden | Labour |
| Halton | Labour |
| Hammersmith | Labour |
| Hampstead and Kilburn | Labour |
| Harborough | Labour |
| Harlow | Labour |
| Harrogate and Knaresborough | Lib Dem |
| Harrow East | Labour |
| Harrow West | Labour |
| Hartlepool | Labour |
| Harwich and North Essex | Labour |
| Hastings and Rye | Labour |
| Havant | Labour |
| Hayes and Harlington | Labour |
| Hazel Grove | Lib Dem |
| Hemel Hempstead | Labour |
| Hemsworth | Labour |
| Hendon | Labour |
| Henley | Lib Dem |
| Hereford and South Herefordshire | Labour |
| Hertford and Stortford | Labour |
| Hertsmere | Labour |
| Hexham | Labour |
| Heywood and Middleton | Labour |
| High Peak | Labour |
| Hitchin and Harpenden | Lib Dem |
| Holborn and St Pancras | Labour |
| Hornchurch and Upminster | Labour |
| Hornsey and Wood Green | None |
| Horsham | Lib Dem |
| Houghton and Sunderland South | Labour |
| Hove | Labour |
| Huddersfield | Labour |
| Huntingdon | Labour |
| Hyndburn | Labour |
| Ilford North | Labour |
| Ilford South | Labour |
| Inverclyde | None |
| Inverness, Nairn, Badenoch and Strathspey | SNP |
| Ipswich | Labour |
| Isle of Wight | Not sure |
| Islington North | None |
| Islington South and Finsbury | None |
| Islwyn | Labour |
| Jarrow | Labour |
| Keighley | Labour |
| Kenilworth and Southam | Not sure |
| Kensington | Labour |
| Kettering | Labour |
| Kilmarnock and Loudoun | SNP |
| Kingston and Surbiton | Lib Dem |
| Kingston upon Hull East | Labour |
| Kingston upon Hull North | Labour |
| Kingston upon Hull West and Hessle | Labour |
| Kingswood | Labour |
| Kirkcaldy and Cowdenbeath | SNP |
| Knowsley | Labour |
| Lagan Valley | Alliance |
| Lanark and Hamilton East | SNP |
| Lancaster and Fleetwood | Labour |
| Leeds Central | Labour |
| Leeds East | Labour |
| Leeds North East | Labour |
| Leeds North West | Labour |
| Leeds West | Labour |
| Leicester East | Labour |
| Leicester South | Labour |
| Leicester West | Labour |
| Leigh | Labour |
| Lewes | Lib Dem |
| Lewisham, Deptford | Labour |
| Lewisham East | Labour |
| Lewisham West and Penge | Labour |
| Leyton and Wanstead | Labour |
| Lichfield | Labour |
| Lincoln | Labour |
| Linlithgow and East Falkirk | SNP |
| Liverpool, Riverside | Labour |
| Liverpool, Walton | Labour |
| Liverpool, Wavertree | Labour |
| Liverpool, West Derby | Labour |
| Livingston | SNP |
| Llanelli | Labour |
| Loughborough | Labour |
| Louth and Horncastle | Labour |
| Ludlow | Not sure |
| Luton North | Labour |
| Luton South | Labour |
| Macclesfield | Labour |
| Maidenhead | Lib Dem |
| Maidstone and The Weald | Not sure |
| Makerfield | Labour |
| Maldon | Not sure |
| Manchester Central | Labour |
| Manchester, Gorton | Labour |
| Manchester, Withington | None |
| Mansfield | Labour |
| Meon Valley | Lib Dem |
| Meriden | Labour |
| Merthyr Tydfil and Rhymney | Labour |
| Mid Bedfordshire | Labour |
| Mid Derbyshire | Labour |
| Middlesbrough | Labour |
| Middlesbrough South and East Cleveland | Labour |
| Mid Dorset and North Poole | Lib Dem |
| Midlothian | SNP |
| Mid Norfolk | Labour |
| Mid Sussex | Lib Dem |
| Mid Ulster | Sinn Féin |
| Mid Worcestershire | Labour |
| Milton Keynes North | Labour |
| Milton Keynes South | Labour |
| Mitcham and Morden | Labour |
| Mole Valley | Lib Dem |
| Monmouth | Labour |
| Montgomeryshire | Lib Dem |
| Moray | SNP |
| Morecambe and Lunesdale | Labour |
| Morley and Outwood | Labour |
| Motherwell and Wishaw | None |
| Na h-Eileanan An Iar | SNP |
| Neath | Labour |
| Newark | Labour |
| Newbury | Lib Dem |
| Newcastle-Under-Lyme | Labour |
| Newcastle Upon Tyne Central | Labour |
| Newcastle Upon Tyne East | Labour |
| Newcastle Upon Tyne North | Labour |
| New Forest East | Not sure |
| New Forest West | Not sure |
| Newport East | Labour |
| Newport West | Labour |
| Newry and Armagh | Sinn Féin |
| Newton Abbot | Not sure |
| Normanton, Pontefract and Castleford | Labour |
| Northampton North | Labour |
| Northampton South | Labour |
| North Antrim | Not sure |
| North Ayrshire and Arran | SNP |
| North Cornwall | Lib Dem |
| North Devon | Lib Dem |
| North Dorset | Lib Dem |
| North Down | Alliance |
| North Durham | Labour |
| North East Bedfordshire | Labour |
| North East Cambridgeshire | Labour |
| North East Derbyshire | Labour |
| North East Fife | None |
| North East Hampshire | Lib Dem |
| North East Hertfordshire | Labour |
| North East Somerset | Not sure |
| North Herefordshire | Not sure |
| North Norfolk | Lib Dem |
| North Shropshire | Lib Dem |
| North Somerset | Labour |
| North Swindon | Labour |
| North Thanet | Labour |
| North Tyneside | Labour |
| North Warwickshire | Labour |
| North West Cambridgeshire | Labour |
| North West Durham | Labour |
| North West Hampshire | Not sure |
| North West Leicestershire | Labour |
| North West Norfolk | Labour |
| North Wiltshire | Lib Dem |
| Norwich North | Labour |
| Norwich South | Labour |
| Nottingham East | Labour |
| Nottingham North | Labour |
| Nottingham South | Labour |
| Nuneaton | Labour |
| Ochil and South Perthshire | SNP |
| Ogmore | Labour |
| Old Bexley and Sidcup | Labour |
| Oldham East and Saddleworth | Labour |
| Oldham West and Royton | Labour |
| Orkney and Shetland | None |
| Orpington | Not sure |
| Oxford East | Labour |
| Oxford West and Abingdon | Lib Dem |
| Paisley and Renfrewshire North | SNP |
| Paisley and Renfrewshire South | None |
| Pendle | Labour |
| Penistone and Stocksbridge | Labour |
| Penrith and The Border | Labour |
| Perth and North Perthshire | SNP |
| Peterborough | Labour |
| Plymouth, Moor View | Labour |
| Plymouth, Sutton and Devonport | Labour |
| Pontypridd | Labour |
| Poole | Labour |
| Poplar and Limehouse | Labour |
| Portsmouth North | Labour |
| Portsmouth South | Labour |
| Preseli Pembrokeshire | Labour |
| Preston | Labour |
| Pudsey | Labour |
| Putney | Labour |
| Rayleigh and Wickford | Labour |
| Reading East | Labour |
| Reading West | Labour |
| Redcar | Labour |
| Redditch | Labour |
| Reigate | Not sure |
| Rhondda | Labour |
| Ribble Valley | Labour |
| Richmond Park | Lib Dem |
| Richmond (Yorks) | Not sure |
| Rochdale | Labour |
| Rochester and Strood | Labour |
| Rochford and Southend East | Labour |
| Romford | Labour |
| Romsey and Southampton North | Lib Dem |
| Rossendale and Darwen | Labour |
| Ross, Skye and Lochaber | None |
| Rotherham | Labour |
| Rother Valley | Labour |
| Rugby | Labour |
| Ruislip, Northwood and Pinner | Labour |
| Runnymede and Weybridge | Not sure |
| Rushcliffe | Labour |
| Rutherglen and Hamilton West | None |
| Rutland and Melton | Not sure |
| Saffron Walden | Lib Dem |
| Salford and Eccles | Labour |
| Salisbury | Not sure |
| Scarborough and Whitby | Labour |
| Scunthorpe | Labour |
| Sedgefield | Labour |
| Sefton Central | Labour |
| Selby and Ainsty | Labour |
| Sevenoaks | Lib Dem |
| Sheffield, Brightside and Hillsborough | Labour |
| Sheffield Central | Labour |
| Sheffield, Hallam | Labour |
| Sheffield, Heeley | Labour |
| Sheffield South East | Labour |
| Sherwood | Labour |
| Shipley | Labour |
| Shrewsbury and Atcham | Labour |
| Sittingbourne and Sheppey | Labour |
| Skipton and Ripon | Not sure |
| Sleaford and North Hykeham | Labour |
| Slough | Labour |
| Solihull | Not sure |
| Somerton and Frome | Lib Dem |
| Southampton, Itchen | Labour |
| Southampton, Test | Labour |
| South Antrim | Not sure |
| South Basildon and East Thurrock | Labour |
| South Cambridgeshire | Lib Dem |
| South Derbyshire | Labour |
| South Dorset | Labour |
| South Down | None |
| South East Cambridgeshire | Lib Dem |
| South East Cornwall | Not sure |
| Southend West | Labour |
| South Holland and The Deepings | Labour |
| South Leicestershire | Labour |
| South Norfolk | Labour |
| South Northamptonshire | Labour |
| Southport | Labour |
| South Ribble | Labour |
| South Shields | Labour |
| South Staffordshire | Labour |
| South Suffolk | Labour |
| South Swindon | Labour |
| South Thanet | Labour |
| South West Bedfordshire | Labour |
| South West Devon | Labour |
| South West Hertfordshire | Not sure |
| South West Norfolk | Labour |
| South West Surrey | Lib Dem |
| South West Wiltshire | Labour |
| Spelthorne | Labour |
| Stafford | Labour |
| Staffordshire Moorlands | Labour |
| St Albans | Lib Dem |
| Stalybridge and Hyde | Labour |
| St Austell and Newquay | Labour |
| Stevenage | Labour |
| St Helens North | Labour |
| St Helens South and Whiston | Labour |
| Stirling | SNP |
| St Ives | Lib Dem |
| Stockport | Labour |
| Stockton North | Labour |
| Stockton South | Labour |
| Stoke-On-Trent Central | Labour |
| Stoke-On-Trent North | Labour |
| Stoke-On-Trent South | Labour |
| Stone | Labour |
| Stourbridge | Labour |
| Strangford | Alliance |
| Stratford-On-Avon | Lib Dem |
| Streatham | None |
| Stretford and Urmston | Labour |
| Stroud | Labour |
| Suffolk Coastal | Labour |
| Sunderland Central | Labour |
| Surrey Heath | Lib Dem |
| Sutton and Cheam | Lib Dem |
| Sutton Coldfield | Labour |
| Swansea East | Labour |
| Swansea West | Labour |
| Tamworth | Labour |
| Tatton | Labour |
| Taunton Deane | Lib Dem |
| Telford | Labour |
| Tewkesbury | Lib Dem |
| The Cotswolds | Lib Dem |
| The Wrekin | Labour |
| Thirsk and Malton | Labour |
| Thornbury and Yate | Lib Dem |
| Thurrock | Labour |
| Tiverton and Honiton | Lib Dem |
| Tonbridge and Malling | Not sure |
| Tooting | Labour |
| Torbay | Lib Dem |
| Torfaen | Labour |
| Torridge and West Devon | Not sure |
| Totnes | Lib Dem |
| Tottenham | Labour |
| Truro and Falmouth | Labour |
| Tunbridge Wells | Lib Dem |
| Twickenham | Lib Dem |
| Tynemouth | Labour |
| Upper Bann | Sinn Féin |
| Uxbridge and South Ruislip | Labour |
| Vale of Clwyd | Labour |
| Vale of Glamorgan | Labour |
| Vauxhall | None |
| Wakefield | Labour |
| Wallasey | Labour |
| Walsall North | Labour |
| Walsall South | Labour |
| Walthamstow | Labour |
| Wansbeck | Labour |
| Wantage | Lib Dem |
| Warley | Labour |
| Warrington North | Labour |
| Warrington South | Labour |
| Warwick and Leamington | Labour |
| Washington and Sunderland West | Labour |
| Watford | Labour |
| Waveney | Labour |
| Wealden | Not sure |
| Weaver Vale | Labour |
| Wellingborough | Labour |
| Wells | Lib Dem |
| Welwyn Hatfield | Labour |
| Wentworth and Dearne | Labour |
| West Aberdeenshire and Kincardine | SNP |
| West Bromwich East | Labour |
| West Bromwich West | Labour |
| West Dorset | Lib Dem |
| West Dunbartonshire | None |
| West Ham | Labour |
| West Lancashire | Labour |
| Westminster North | Labour |
| Westmorland and Lonsdale | Lib Dem |
| Weston-Super-Mare | Labour |
| West Suffolk | Labour |
| West Tyrone | Sinn Féin |
| West Worcestershire | Not sure |
| Wigan | Labour |
| Wimbledon | Lib Dem |
| Winchester | Lib Dem |
| Windsor | Lib Dem |
| Wirral South | Labour |
| Wirral West | Labour |
| Witham | Labour |
| Witney | Lib Dem |
| Woking | Lib Dem |
| Wokingham | Lib Dem |
| Wolverhampton North East | Labour |
| Wolverhampton South East | Labour |
| Wolverhampton South West | Labour |
| Worcester | Labour |
| Workington | Labour |
| Worsley and Eccles South | Labour |
| Worthing West | Labour |
| Wrexham | Labour |
| Wycombe | Labour |
| Wyre and Preston North | Labour |
| Wyre Forest | Labour |
| Wythenshawe and Sale East | Labour |
| Yeovil | Lib Dem |
| Ynys Mon | Not sure |
| York Central | Labour |
| York Outer | Labour |