Twenty-eighth Amendment of the Constitution Bill 2008 (Ireland) By constituency By constituency

| Constituency | Electorate | s_Spoilt_vote | Total_poll_ | For_ | Against_ |
|---|---|---|---|---|---|
| Carlow–Kilkenny | 103397 | 228 | 52,644 (51) | 26,210 (50) | 26,206 (50) |
| Cavan–Monaghan | 92920 | 190 | 49,649 (53) | 22,346 (45) | 27,113 (55) |
| Clare | 77398 | 145 | 40,617 (52) | 20,982 (52) | 19,490 (48) |
| Cork East | 83850 | 169 | 42,398 (51) | 18,177 (43) | 24,052 (57) |
| Cork North–Central | 65738 | 134 | 35,120 (53) | 12,440 (36) | 22,546 (64) |
| Cork North–West | 63574 | 114 | 35,358 (56) | 16,253 (46) | 18,991 (54) |
| Cork South–Central | 89844 | 177 | 49,455 (55) | 22,112 (45) | 27,166 (55) |
| Cork South–West | 58225 | 143 | 32,184 (55) | 14,235 (44) | 17,806 (56) |
| Donegal North–East | 56195 | 144 | 25,654 (46) | 9,006 (35) | 16,504 (65) |
| Donegal South–West | 60079 | 113 | 27,946 (47) | 10,174 (37) | 17,659 (63) |