Although the government plans to hold a plebiscite on marriage after the next election, AME will still focus on achieving a parliamentary majority in the lead up to the ballot.

"Our pre-election goal is to achieve a clear-cut majority in parliament, so regardless of whichever party wins government we will have the numbers to pass reform," said national director Rodney Croome.

"We are now just eight votes away in the lower house, and have a slim majority in the senate."