Jeremy Corbyn is facing a potential challenge in his Islington North constituency from a terminally-ill cancer patient campaigning for reform of medical negligence laws to save the NHS millions of pounds.
Despite being confined to bed in her Norfolk home, Susanne Cameron-Blackie is planning to register as an independent candidate in the north London seat for the June 8 General Election.
She told The Mail On Sunday she was taking the stand to raise awareness of the vast sums lost by the NHS due to law suits.
Ms Cameron-Blackie, 68, said she was motivated by her horror at suggestions she should sue over being given insufficiently strong painkillers on a cancer ward last month.
She said: "If I sued, I would be taking away yet more money from the NHS, so making it more likely that a future patient would endure a similar ordeal.
"This is the point Corbyn and Labour don't get.
"They say they are socialists, yet they're doing nothing about a system which treats the NHS as if it were a manufacturer making faulty products, instead of a provider of a vital social good."
She said: "I may be the first parliamentary candidate forced to lie down, rather than stand, for office.
"But I'm determined to do something useful with what's left of my life.
"I'm taking on Corbyn in his political comfort zone. He talks about shaping the future.
"As things stand, the future for the NHS is to vanish up its own backside because of the money going on lawyers and damages."