According to today's Sunday Times there has been a big fall in support for a United Ireland in the Republic over the last 4 years. The poll was conducted by RedC on October 4-6th.
57% favoured a United Ireland; 22% were against; and, 21% Don't Know.
The number in favour at 57% is down from 80% in a 2006 RedC poll.
Support was consistent across all demographic groups and regions of the country although it was notably higher among younger people (63%) and the Unemployed (73%). I suspect the higher young and unemployed support can be explained by a higher support level for SF among those groups.