The Voluntary Euthanasia Society said the survey results showed the government should change the law.
Voluntary euthanasia was a later concern, this one strengthened by watching his mother's drawn-out death in 1977.
Whereas, one in 700 deaths in the US state of Oregon are from assisted suicide - voluntary euthanasia is not allowed.
"He persuaded us of the wider picture, that we needed doctors, " said Derek Humphry, founder of the Hemlock Society, which advocated voluntary euthanasia.
Galvanised by party leader Charles Kennedy's refusal to promote voluntary euthanasia, Sir Ludovic was to return to the political fray as an independent candidate.
In August 2005, to end the "pain and misery" of her condition, she attempted to starve herself to death as an act of voluntary euthanasia.
Mr Martin's daughter, Sara Martin, said her mother died in 1992 of a brain tumour and her "traumatic" illness prompted her father's interest in voluntary euthanasia.
Most of those advocating legalised voluntary euthanasia would be horrified by the suggestion that their arguments could ever lead to a greater tolerance, or even endorsement, of suicide in general.
Questions of when voluntary euthanasia can be permitted, the nature of consent and the role of doctors and families are regularly explored in both the popular media and professional journals.
He wanted independence for Scotland, he was president of the Voluntary Euthanasia Society and, at 80, he brought out a book dismissing the beliefs on which Christianity was founded as "preposterous".
But Lord Justice Toulson, Mr Justice Royce and Mrs Justice Macur unanimously agreed it would be wrong to depart from the long-established legal position that "voluntary euthanasia is murder, however understandable the motives may be".
If voluntary euthanasia at the end of life becomes more widely accepted, it is likely that society's disapproval of suicide in general will come under greater scrutiny, if only because the dividing line between suicide in the case of the terminally ill and other kinds of suicide will become more blurred.
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