“Portugal: Communists firmly oppose euthanasia”
(BioEdge — June 2, 2018)
The vote failed because the communist Party opposes euthanasia.

“Portugal parliament rejects legal euthanasia in divisive vote”
(Reuters — May 29, 2018)
Portugal’s parliament rejected on Tuesday a bill that would have legalized voluntary euthanasia for terminal patients in the Catholic-majority country by a narrow margin, but it secured enough support to ensure continued debate on the issue.