The hopes of euthanasia supporters appear to rely on Act leader David Seymour and the luck of the draw after both Prime Minister John Key and Labour chief Andrew Little ruled out putting up a bill on the issue.
Mr Key said yesterday that he felt sympathy for Lecretia Seales' case on assisted dying for the terminally ill but others in National were strongly opposed to it and the Government would not sponsor a euthanasia bill.
Mr Key said he agreed with Justice David Collins' ruling in Lecretia Seales' court case that it was up to Parliament to change the law on the issue. However, that should be a conscience vote for MPs and dealt with in a member's bill.
The PM said National was open to a select committee inquiry that could result from a petition on the matter and allow public debate.
The decision to rule out a Government bill means an individual MP will have to put in a private member's bill and rely on luck to get it into the House, because measures are selected by ballot.