Voluntary euthanasia is the ending of a person's life at their request in order to relieve them of suffering. 

Assisted suicide is contrasted to euthanasia, sometimes referred to as mercy killing, where the person dying does not directly bring about their own death, but is killed in order to stop the person from experiencing further suffering. 

Euthanasia can occur with or without consent, and can be classified as voluntary, non-voluntary or involuntary.

This poll is primarily concerned with the first of these, i.e. Voluntary Euthanasia. 

Here is a poll for non-voluntary euthanasia: 

Results (Note: you'll be ineligible to vote if you choose to see results)