Many of the studies on this question examine the outcomes for children in same-sex parented families where both parents are women.
Discussing his opposition to same-sex marriage, Liberal MP Kevin Andrews said children who are brought up with a mother and father are 'better off than those who are not'. Let's look at the research.
Politics podcast: Nick Xenophon on media reform.
Nick Xenophon's position on contentious legislation – currently media reform – is crucial for the government.
More than 16 million people are eligible to vote in the voluntary survey.
Between August 8 and 24 the AEC dealt with 933,592 enrolment transactions, 87% of which were changes or updates.
Marriage is not an automatic right for anyone.
We need to get beyond hyperbole and half-truths from those both for and against marriage equality, and go back to basics.
Qantas CEO Alan Joyce has publicly backed marriage equality.
Research shows that companies will back ethical causes only if they know they will benefit from the stance.
As the marriage equality debate heats up, some Christian groups are depicting themselves as potential victims of discrimination.
In the marriage equality debate, those who once fought against protections for religious freedom are suddenly all for it.
Marriage equality supporters protesting outside the Tasmanian Liberal Party state council this week.
A 'No' result in the postal ballot would leave a running sore that would further reduce Malcolm Turnbull's diminished authority.
In Australia, same-sex attracted young people are six times more likely to have suicidal thoughts than their heterosexual peers.
Same-sex attracted people have poorer mental health than their heterosexual peers, but In jurisdictions that have legalised same-sex marriage, the gap between the two is much smaller.
Christians who call on the Bible to support their arguments against marriage equality are on shaky ground.
For Christian groups to claim the Bible speaks against same-sex marriage is simply a misreading of biblical values.
Politics Podcast: Mathias Cormann on the same-sex marriage postal survey.
Since announcing that the ABS would be responsible for carrying out the same-sex marriage postal survey, Mathias Cormann has had no shortage of questions.
Malcolm Turnbull’s net satisfaction rating plunged from minus 12 to minus 20 in the poll.
The latest Newspoll contains encouraging news for the 'yes' case in the postal ballot on same-sex marriage.
The two couples challenging Northern Ireland’s ban on same-sex marriage, leaving the High Court in Belfast.
Brian Lawless/PA Wire
A judge in Belfast has dismissed a challenge to Northern Ireland's ban on same-sex marriage citing it as a 'social policy' issue.
Respect the people in any same-sex marriage debate, but you don’t have to respect their views.
Your ideas are not immune to criticism just because you express them with sincerity: people are worthy of respect, ideas are not.
Michelle Grattan and Nicholas Klomp discuss the week in politics.
Bill Shorten has promised an all-out effort to promote a yes vote, while continuing to attack the ballot.
While Bill Shorten has little at risk, his campaigning on same-sex marriage could come to Malcolm Turnbull's aid.
For the ABS, even the basic task of sending out ballot papers will not be straightforward.
The key question in a legal challenge to the 'postal plebiscite' is whether information about Australians’ opinions on same-sex marriage constitutes 'statistical information'.
Christine Forster and her partner Virginia plan to marry.
Tony Abbott, who resoundingly won an election being “Dr No”, will bring all his formidable attack skills to trying to kill the push to change the definition of marriage. In a pitch that sees him lined…
Malcolm Turnbull has bought himself immediate relief from the backbench revolt.
When it comes to the Liberals and same-sex marriage, each “solution” seems to lead to a new problem. Tony Abbott’s plebiscite became bad news for Malcolm Turnbull; now Turnbull’s postal vote – to ask people…
Throughout Australian history, previous parliaments have changed the legal understanding of marriage – none needed a plebiscite.
The government seems determined to give voters a voice on marriage equality, and equally determined not to be bound by what those voters say.
This is a potent slogan, although there is a deeply conservative undertone to the idea that love always requires marriage.
The marriage equality movement could still back the plebiscite on condition that its results are binding.