Irish music sensation Hozier wants everyone to be allowed to be taken to church and is the latest celebrity to support the pro-gay marriage campaign.
Hozier - real name Andrew Byrne - posted a picture of himself holding a sign that says "Yes Equality, I'm ready to vote" to twitter and encouraged his 98,000 followers to do the same.
"Remember to register to vote! Please spread awareness," he wrote online.
The pro-gay marriage campaign, called Yes Equality, has garnered huge support over the last number of days after Irish comedian Dara O'Briain instructed his massive Twitter following to register to vote. "Whatever your opinion, don't lose your voice," he told 1.85m fans.
Irish actor Colin Farrell, who was his brother's best man at his civil partnership, is also backing the Yes vote for equal marriage rights ahead of the upcoming referendum.
Other notable people supporting the 'YesEquality' campaign include Fianna Fail leader Micheal Martin and Taoiseach Enda Kenny.
Ireland introduced civil partnerships in 2011 and citizens will vote on extending civil marriage to include same-sex couples in May 2015.
The YesEquality campaign was launched by the Gay and Lesbian Equality Network (GLEN), the Irish Council for Civil Liberties and Marriage Equality Ireland to encourage people to register to vote before the deadline on November 25.
"The upcoming referendum on equal access to civil marriage is a once-in-a- generation moment," the GLEN website states.
"Whilst the polls are very positive we cannot afford to be complacent. Decisions are made by people who are registered and turn up to vote.
"We encourage everybody to make their voice heard and change Ireland for the better by registering to vote."
Meanwhile, the Union of Students in Ireland (USI) has ensured that more than 10,000 third level students are registered to vote ahead of the referendum next spring.