For the third time in Scottish parliamentary history, MSPs are to vote on plans to legalise assisted dying.
The ballot, which would allow terminally-ill adults to seek medical help to end their lives, comes after MPs voted in favour of similar proposals for England and Wales.
Supporters describe the Holyrood bill as a progressive move to ease the suffering of dying Scots.
Opponents say it would fail to safeguard some of the most vulnerable people in society.
The proposed legislation would allow a patient to request medical assistance to end their life – but only if they had a terminal illness and had been ruled mentally fit to make the decision by two doctors.
Liberal Democrat MSP Liam McArthur, who tabled the bill, recently said the minimum age of people who could seek an assisted death would rise from 16 to 18.
He told BBC Radio's Good Morning Scotland programme, he expects the vote to be "tight".
He said: "I'm confident that the mood has change sufficiently in parliament since last we voted on this in 2015.
"There's a recognition that we can't continue to leave dying Scots failed by the ban on assisted dying. We do need to move ahead with reform."
