The Campaign for Civil Marriage Equality launched a new series of campaign posters on Friday featuring real lesbian and gay citizens of Ireland, from all walks of life. Photo: (Left-right) Sarah Gilligan, Sandra Irwin-Gowran, David Caron, John Curren and Celeste Roche.

Support for a Yes vote in the forthcoming Marriage Equality Referendum has plummeted with a week to go before the country goes to the polls, according to a Sunday Independent/Millward Brown opinion poll.

More than half (53pc) of those polled said they are still favour of passing the constitutional change but this is a drop of 13 points on the last survey.

Almost a quarter (24pc) of people surveyed said they will vote No next Friday, which is an increase of three points on a poll carried out last month.

The percentage of voters who do not know which way they will vote has jumped 10 points to 23pc.

Excluding ‘don’t knows’ the poll shows the Yes side at 69pc (-7) and the No camp at 31pc (+7).

The number of voters who are “absolutely certain” they will vote No has increased while on the Yes side there has been a drop in this category.

Support for a Yes vote among both men and women has dropped, as has the number of people supporting the campaign in rural and urban area.

Those in favour of passing the constitutional change has dropped across all age categories – even among young people between the ages of 18 and 34.

For more, see tomorrow's Sunday Independent.

Online Editors