He voted in favour of the thirty-fourth Amendment of the Constitution of Ireland permitting same-sex marriage in the 2015 referendum, describing it as "a seminal day in Irish history... we should remember that, incredibly, homosexuality was actually crime in this country until 1993". He voted in favour due to "the explicit discrimination against a section of society which needed to be redressed". He supported of the thirty-sixth Amendment of the Constitution of Ireland to Repeal the Eighth in the 2018 referendum on the basis that "none of us has the moral authority to tell a woman what to do with her body".