The House of Commons has voted 383-73 in favour of a clause tabled by Labour MP Conor McGinn to extend same-sex marriage to Northern Ireland.
The clause, which will require secondary legislation, will only come into effect if, by 21 October, power-sharing talks have failed to restore devolution. If devolution is restored by that date, the amendment will become void.
The vote saw only one cabinet minister, former Northern Ireland Secretary James Brokenshire, fail to support the clause.
After the vote, Penny Mordaunt, Secretary of State for Defence and Minister for Women & Equalities, tweeted: “Proud to have supported this amendment, which passed with a majority of 310.
“Every citizen of the UK should be able to marry who they love.
“The fact that people in Northern Ireland have been unable to has torn at the social fabric of our country.”
In last night’s TV debate between prime ministerial candidates Jeremy Hunt and Boris Johnson, when asked whether they supported the clause, Hunt confirmed that he did while Johnson said that it was a matter for the Northern Ireland Assembly.
Neither man had joined their colleagues in voting on the clause earlier in the day.
Tell us what you think below...
Join our Newsletter today!
The 12-month campaign confronted the issues of ageism and isolation
The commission will draw on the ideas and experience of people living with HIV
The website took its branding from the horror movie franchise, Saw
Johnson also referred to 'drinking clubs frequented by Mandy and his pals'
Quentin Crisp; Naked Hope is coming back to the Old Joint Stock Theatre
Johnson secured a massive victory over leadership rival Jeremy Hunt
The Hairspray director will perform at Birmingham Hippodrome in November
Sir Alan was the first Conservative MP to come out as gay, back in 2002
It's a woman's right not to wax testicles, says Ricky Gervais
Lawsuit claims US pastor said he was sucking demons out of men during oral sexMore
Twitter’s ‘Gay Footballer’ is claiming he’s going to come out on WednesdayMore
'Gay, fat, stupid' bullied boy gets messages of support from his West End musical favouritesMore
Human Rights court fines Putin’s Russia for discriminating against three LGBT groupsMore
Shane Richie and Layton Williams to star in Everybody's Talking About Jamie UK tourMore
Hairspray director and cult icon John Waters to headline this year's SHOUT FestivalMore
Equality lessons row: Blogger says protest at Nottingham school is to ‘save the children’More