Twenty-eighth Amendment of the Constitution of Ireland By constituency Result by constituency

| Constituency | Electorate | s_Spoilt_vote | Total_poll_ | For_ | Against_ | _Yes_side_2008_ |
|---|---|---|---|---|---|---|
| Carlow–Kilkenny | 104387 | 294 | 60,254 (58.0) | 42,499 (70.5) | 17,755 (29.5) | +20.5 |
| Cavan–Monaghan | 95270 | 221 | 56,041 (59.1) | 34,740 (62.0) | 21,301 (38.0) | +16.8 |
| Clare | 82292 | 222 | 46,605 (56.9) | 33,707 (72.3) | 12,898 (27.7) | +20.5 |
| Cork East | 84411 | 178 | 48,343 (57.5) | 31,956 (66.1) | 16,387 (33.9) | +23.1 |
| Cork North–Central | 65348 | 161 | 38,778 (59.6) | 21,642 (55.8) | 17,136 (44.2) | +20.2 |
| Cork North–West | 64759 | 153 | 39,191 (60.8) | 27,249 (69.5) | 11,942 (30.5) | +23.4 |
| Cork South–Central | 89655 | 183 | 53,914 (60.3) | 36,040 (66.8) | 17,874 (33.2) | +20.2 |
| Cork South–West | 58657 | 151 | 35,379 (60.6) | 23,764 (67.2) | 11,615 (32.8) | +22.8 |
| Donegal North–East | 56935 | 129 | 29,161 (51.4) | 14,156 (48.5) | 15,005 (51.5) | +13.2 |