THE Legislative Council will block a second bid to make Tasmania the first state to allow gay couples to marry.
As the House of Assembly considers a bill to legalise voluntary euthanasia, the upper house will debate same-sex marriage for the second time when Parliament resumes later this month.
The Examiner understands no MLCs have changed their mind since Premier Lara Giddings and Greens leader Nick McKim's private members bill was narrowly defeated just over 12 months ago and changes to the make-up of the house will have no bearing on the numbers.
Marriage equality campaigners had hoped that the findings of a New South Wales parliamentary inquiry confirming that states had the right to make marriage laws would win over MLCs who cited constitutional concerns as a key factor in their decision to vote against the legislation.
Legislative Council President Jim Wilkinson said it was the first time in his 18 years in Parliament that already-defeated legislation was revisited in the same term of government.
Mr Wilkinson voted against the bill last time and will have the casting vote this time in the event of a tie.
He said the NSW report had not changed his mind.
``To me it didn't say anything surprising.''
Launceston MLC Rosemary Armitage confirmed she still believed the matter was a federal issue and there was no point in debating it again.
``It's been dealt with,'' Ms Armitage said.
She questioned why the government would want to use the last remaining sitting days of the year on the issue instead of the mounting backlog of other legislation passed by the House of Assembly still to be dealt with.
In the final four sitting weeks, the upper house will also have to squeeze in what is expected to be lengthy and difficult debates on a bill to decriminalise abortion and legalise voluntary assisted dying if that passes the lower house.
Tasmanians United for Marriage Equality convenor Andrew Badcock said it was important to try again on same-sex marriage as things had changed in the past 12 months.
``More countries such as our neighbours New Zealand, France and more American states have done it,'' Mr Badcock said.