A poll published today finds growing support among Irish people for same-sex marriage. The IPSOS/MRBI survey in the Irish Times shows 67% are planning to vote Yes in the forthcoming referendum.

That is up from 53% in a similar poll in November 2012. 21% said they would vote No, and 12% were undecided.

When the undecided are excluded, the Yes figure rises to 76% with 24% No - compared to 64% Yes and 36% No in November 2012.

The poll shows that younger voters are much more likely to support same-sex marriage than older people. Among those aged 18 to 24 age, 80% said they would vote in favour, 13% would vote No and 7% were undecided.

#SameSexMarraige @IrishTimes / @IpsosMRBI Poll results: Yes: 67%; No: 21%; Don’t Know: 12%. When Don’t Knows excluded: Yes: 76%; No: 24%

— Ipsos MRBI (@IpsosMRBI) April 7, 2014

This compares to 44%of those aged 65 and over who would vote Yes, with 40% saying they would vote No and 16% undecided.

Women were significantly more in favour of a change than men, with 73%of women saying they will vote Yes compared to 61% of men.

The poll also shows voters are of the view that a traditional family of a father and mother is best suited to bringing up children by comparison with any other combination.

1,000 voters over the age of 18 were polled in the survey, which was carried out last week.

Last November, the government agreed to hold a referendum on the issue of same-sex marriage in 2015.