Revealed: the 29 anti-reform MPs who would lose their seats under the AV system

For 29 MPs, opposition to scrapping the first-past-the-post voting system is a matter of raw political survival, an analysis by The Independent has found.

Eight Labour MPs and 21 Tories campaigning against the alternative vote would not have been elected in last year's general election had AV been in operation. They include the Tory MP George Eustice, one of the key spokesmen for the No to AV campaign, who won his Camborne and Redruth seat with barely 38 per cent support.

Researchers at Essex University, who analysed every constituency, suggested that the Tories would still have been the largest party at the last election under AV. But the Commons would have looked significantly different: David Cameron's forces would have won overall 23 fewer seats; Labour would have had 10 fewer MPs; and the Liberal Democrats' ranks would have been bolstered by 32 extra MPs.

Among the current crop of Labour MPs, 20 would not have been in the Commons under the system which is being put to the public in Thursday's referendum; eight of those 20 have signed up to the No to AV campaign. Among them is Ian Austin, Gordon Brown's former parliamentary private secretary, who clung on by just 649 votes last year in Dudley North. The researchers at Essex University have calculated that the second-preference votes of Ukip and BNP supporters would have handed it to the Tories.

Emily Thornberry, the Labour MP for Islington South and Finsbury, would have seen her seat fall to her bitter Liberal Democrat local rivals. Jim Dowd, the long-standing MP for Lewisham West and Penge, would also have been ousted by the Liberal Democrats. Other No to AV Labour supporters who would have lost out are:

* Toby Perkins, who beat the Liberal Democrats in Chesterfield by 549 votes.

* Simon Danczuk, who managed to capture Rochdale from the Liberal Democrats despite Gillian Duffy's infamous monstering of Gordon Brown when the prime minister visited the town during the election campaign.

* Ian Murray, who picked up Edinburgh South with less than 35 per cent support, and a majority of just 316.

* Diana Johnson, a former minister, who just managed to beat a Liberal Democrat challenge in Hull North by 641 votes.

* Geraint Davies, whose return to Parliament as MP for Swansea West succeeded by only 504 votes.

For the Tories, in addition to Mr Eustice, 20 current Tory MPs – all of whom favour first past the post – would have lost under AV in 2010. Guto Bebb (Aberconwy), Mary Macleod (Brentford and Isleworth), Anna Soubry (Broxtowe), Matthew Offord (Hendon), Mike Weatherley (Hove), Eric Ollerenshaw (Lancaster & Fleetwood), Mark Spencer (Sherwood) and James Wharton (Stockton South) would have lost their seats to Labour.

Charlotte Leslie (Bristol North West), Jason McCartney (Colne Valley), Andrew Jones (Harrogate & Knaresborough), Glyn Davies (Montgomeryshire), Anne Marie Morris (Newton Abbot), Nicola Blackwood (Oxford West and Abingdon), Rob Wilson (Reading East), Anne Main (St Albans), Sarah Newton (Truro & Falmouth), Richard Harrington (Watford), John Penrose (Weston-super-Mare) and Julian Sturdy (York Outer) would have lost their seats to the Liberal Democrats.

Two other Tories who would have lost their seats have a more ambiguous attitude to reform. Jonathan Evans, the MP for Cardiff North, has previously backed electoral reform but has not intervened in the AV debate. And David Mowat, the MP for Warrington South, said he is "agnostic" on the issue.

Survival instinct kicks in

The 29 'No to AV' MPs who, based on research by Essex University and The Independent, most likely would not have won their seats at the 2010 general election had AV been in operation



Constituency

2010 winner under first-past-the-post

Likely winner under AV

Aberconwy

Gusto Bebb (Con)

Ronald Hughes (Lab)

Brentford and Isleworth

Mary Macleod (Con)

Ann Keen (Lab)

Brixtowe

Anna Soubry (Con)

Nick Palmer (Lab)

Hendon

Matthew Offord (Con)

Andrew Dismore (Lab)

Hove

Mike Weatherley (Con)

Celia Barlow (Lab)

Lancaster and Fleetwood

Eric Ollerenshaw (Con)

Clive Grunsha (Lab)

Sherwood

Mark Spencer (Con)

Emilie Oldknow (Lab)

Stockton South

James Wharton (Con)

Dari Taylor (Lab)

Camborne and Redruth

George Eustice (Con)

Julia Goldsworthy (LD)

Oxford West and Abingdon

Nicola Blackwood (Con)

Evan Harris (LD)

Bristol North West

Charlotte Leslie (Con)

Paul Harrod (LD)

Colne Valley

Jason McCartney (Con)

Nicola Turner (LD)

Harrogate and Knaresborough

Andrew Jones (Con)

Claire Kelley (LD)

Montgomeryshire

Glyn Davies (Con)

Lembit Opik (LD)

Newton Abbot

Anne Marie-Morris (Con)

Richard Younger-Ross (LD)

Reading East

Rob Wilson (Con)

Gareth Epps (LD)

St Albans

Anne Main (Con)

Sandy Walkington (LD)

Truro and Falmouth

Sarah Newton (Con)

Terrye Teverson (LD)

Watford

Richard Harrington (Con)

Sal Brinton (LD)

Weston-super-Mare

John Penrose (Con)

Mike Bell (LD)

York Outer

Julian Sturdy (Con)

Madeline Kirk (LD)

Dudley North

Ian Austin (Lab)

Graeme Brown (Con)

Islington South and Finsbury

Emily Thornberry (Lab)

Bridget Fox (LD)

Lewisham West and Penge

Jim Dowd (Lab)

Alex Feakes (LD)

Chesterfield

Tony Perkins (Lab)

Paul Holmes (LD)

Rochdale

Simon Danczuk (Lab)

Paul Rowen (LD)

Edinburgh South

Ian Murray (Lab)

Fred Mackintosh (LD)

Hull North

Diana Johnson (Lab)

Denis Healy (LD)

Swansea West

Geraint Davies (Lab)

Peter May (LD)











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