Labour MPs are fearing annihilation at the snap general election on June 8 with one top pollster saying previously safe seats with majorities of 5,000 were at serious risk.
Others in Leave areas with even larger majorities of up to 8,000 where the MP voted Remain have been told they are now fighting a 'tight marginal', according to the Mirror.
The paper quotes one Shadow Cabinet source as saying: 'I think anyone under 10,000 is on the front line, to be honest.
'There will be some under 5,000 who are fine – and some on 6,000 or 7,000 who could be in trouble. It all depends on the local picture.'
So who are the Christian Labour MPs who could be in trouble at the 2017 general election?
Wes Streeting, Ilford North – majority of 589
One of the country's tightest marginal seats with just 589 votes separating Labour from the Conservatives, Ilford North was one of the few seats that swung from Conservatives to Labour at the 2015 general election.
But Wes Streeting, an outspoken critic of Jeremy Corbyn, is highly likely to lose his seat especially given his outspoken opposition to Brexit in an area where 52 per cent voted to leave.
John Woodcock, Barrow and Furness – majority of 795
John Woodcock narrowly held off a strong Conservative challenge in 2015 but faces a near impossible task this time around.
Nearly 12 per cent of voters backed UKIP in 2015 and polling shows many of those now flocking towards the Conservatives.
Highly critical of his leader, Woodcock has made the unusual move of admitting he would not vote for Corbyn, despite standing as the Labour candidate for the area.
But his strong criticism of Brexit is likely to be his undoing in an area where around 57 per cent backed Leave.
Cat Smith, Lancaster and Fleetwood – majority of 1,265
Another rare gain for Labour from the Tories in 2015, Cat Smith's Lancaster and Fleetwood is highly likely to turn blue again on June 8.
A shadow cabinet minister and loyal sidekick to Jeremy Corbyn, Smith has been highly critical of her parliamentary colleagues' opposition to their leader.
But her part in Labour's Remain campaign is unlikely to win her support in Lancaster, who backed Brexit by around 51 per cent.
Karen Buck, Westminster North – majority of 1,977
Karen Buck was first elected in Tony Blair's landslide win in 1997 but has a fight on her hands this time around.
With a majority of less than 2,000 she is well within the 'danger zone' of target seats.
Her saving grace may be that Westminster North strongly backed Remain – like her – and the only party promising to hold a second referendum, the Liberal Democrats, are unlikely to pose much of a challenge, coming a distant fourth in 2015.
With the Conservatives coming second in 2015, Buck will hope to hold them off by fighting on her anti-Brexit stance and her record as a longserving MP.
Susan Elan Jones, Clwyd South – majority of 2,402
Describing the EU referendum result as a 'disaster for our country' in an area where 60 per cent voted to Leave was probably not a smart move for Susan Elan Jones.
Despite what would normally be considered a comfortable majority, the former shadow Welsh minister is in real trouble.
More than 15 per cent of voters in Clwyd South backed UKIP in 2015 and assuming they follow the national trend of converting to the Tories, that majority is suddenly looking very tight indeed.
Rob Flello, Stoke on Trent South – majority of 2,539
An outspoken Catholic MP, Rob Flello is another who is likely to be punished for his anti-Brexit stance.
Despite his best attempts, more than 70 per cent of his constituents backed Leave in one of the most anti-EU areas in the UK.
With a large amount of Stoke's UKIP voters, who made up 21 per cent of the share in 2015, likely to convert to the Tories, it is difficult to see Flello surviving.
Mary Creagh, Wakefield – majority of 2,613
Mary Creagh argued strongly to Remain in the EU and is another in a fiercely Leave area where 62 per cent backed Brexit.
In an article for Christians on the Left she said: 'To leave would putting at risk decades of progress that we have achieved by working together with our neighbours – be it on women's rights, environmental standards, or maintaining peace inside our borders. Britain is a more powerful, prosperous and secure country by being a member of the European Union.'
She compounded her hard anti-Brexit stance by ignoring her party whip and voting against triggering Article 50.
The 18 per cent of UKIP voters from 2015 will not enjoy those moves and are likely to want to punish her. If most of them go Conservative, Creagh could be seeing the end of her parliamentary career.
Helen Goodman, Bishop Auckland – majority of 3,508
The pattern is developing – another ardent Remainer in a Brexit dominant area.
Goodman was formerly one of Jeremy Corbyn's loyalists but switched her allegiances against him after the EU referendum because of his failure to campaign firmly enough for Remain.
'I am just off to do my constituency surgery where I will meet a lot of people I can do nothing for,' she told The Independent the day after the Brexit vote.
Her problem may be the people of Bishop Auckland agree.
Neil Coyle, Bermondsey and Old Southwark – majority of 4,489
Neil Coyle faces a completely different challenge.
With a constituency in metropolitan London, his backing of Remain was in line with 73 per cent of his constituents.
But he could be punished for the opposite reason to many of his colleagues – Labour's perceived failure to stop or halt Brexit.
Coyle snatched the seat away from longstanding and well respected Liberal Democrat Simon Hughes in 2015. Hughes, who is also a firm Christian, is planning to stand again in June and with the Lib Dems perceived as the only party willing to block Brexit in Parliament, Bermondsey may repent of their decision in 2015 and vote for Hughes again.
Jon Cruddas, Dagenham and Rainham – majority of 4,980
With a relatively comfortable majority of nearly 5,000, Jon Cruddas would not have considered himself to be fighting a marginal seat.
But Dagenham and Rainham was one of a few seats in 2015 where UKIP came second with 12,850 votes and nearly 30 per cent of the vote.
With their aim of leaving the EU complete, where these UKIPers decide to find their home this time around will be decisive for Cruddas' future.
Cruddas admitted he was not 'a great fan of the EU' during the campaign but still opted to vote Remain. How the 70 per cent of his constituents who backed Brexit react to that will largely determine his future.