"What a day for equality, for love and respect", Prime Minister Malcolm Turnbull said after the decision was delivered.
"The government is accountable in question time and so is the opposition so we will all be accountable in question time today as we are every day that parliament sits".
After the longest campaign, we're finally there: the marriage equality bill has been passed by both houses of Parliament, and will soon become law across the country.
'A significant concern that millions of Australians have about these proposed changes to marriage laws is the manner in which the freedom of speech and religion is threatened'. Taking into account the requirement to give a month's notice of intent to marry in Australia, we should be seeing the first same-sex weddings take place in January.
Drafting such measures into the Australian bill would delay it, but several gay marriage opponents have told Parliament this week they would not stand in the way of marriage equality because the Australian public clearly supported it in a recent postal ballot.
The Marriage Amendment (Definition and Religious Freedoms) Bill 2017 was voted xx to xx in favor of legalizing marriage equality. They were warned multiple times that parliamentary rules prohibit them making noise and even applauding.
During the Lower House debate, more than 100 MPs spoke for over 28 hours on the proposed Bill.
"She said: Dad, in the years to come, my generation will look back and judge your generation about how you deal with the issue of homosexuality in the same way that your generation considered your parents' generation in the way that they dealt with our Indigenous people", Wallace said.
A nonbinding postal survey found that 62 percent of Australian respondents wanted gay marriage to be legal.
Tony Abbott, left, during Thursday's same-sex marriage debate in the Upper House.
In the end, 61.6% of Australia voted in favor of allowing same-sex marriage, with 38.4% saying "no".