The first poll since the announcement of a same-sex marriage referendum has found that 76% of Irish voters support the legislation.
The Red C poll for Paddy Power found that 18% opposed the proposal with 6.5% were undecided. A random sample of 1,004 adults were interviewed by telephone between 4-6 November for the survey.
Supporters of the centre-right conservative party Fianna Fáil are most likely to oppose same-sex marriage with 29% saying they will not back it.
Support is high among women, with 85% supporting same-sex marriage, as well as people aged under 44 (87%), Labour supporters (96%) and Dubliners (83%).