Civil partnerships have been legal in Ireland since 2011. In 2013, the government held a constitutional convention which voted overwhelmingly in favour of amending the constitution in order to extend marriage rights to same-sex couples. On 22 May 2015, Irish citizens voted on whether to add the following amendment to the constitution: "Marriage may be contracted in accordance with law by two persons without distinction as to their sex". 62.1% of the electorate voted in favour of the amendment, making Ireland the first country worldwide to introduce same-sex marriage through a national referendum. Ireland's first same-sex marriage ceremonies took place in November 2015.