| Date |
Proposal |
Subject |
Electorate |
Total poll (%) |
For (%) |
Against (%) |
| 1 July 1937 |
Constitution of Ireland |
Enactment |
1,775,055 |
1,346,207 (75.8) |
685,105 (56.5) |
526,945 (43.5) |
| 17 July 1959 |
3rd Amendment Bill, 1958 |
Voting system |
1,678,450 |
979,531 (58.4) |
453,322 (48.2) |
486,989 (51.8) |
| 16 October 1968 |
3rd Amendment Bill, 1968 |
Constituency boundaries |
1,717,389 |
1,129,477 (65.8) |
424,185 (39.2) |
656,803 (60.8) |
| " |
4th Amendment Bill, 1968 |
Voting System |
" |
1,129,606 (65.8) |
423,496 (39.2) |
657,898 (60.8) |
| 10 May 1972 |
3rd Amendment |
European Communities |
1,783,604 |
1,264,278 (70.9) |
1,041,890 (83.1) |
211,891 (16.9) |
| 7 December 1972 |
4th Amendment |
Voting age |
1,783,604 |
903,439 (50.7) |
724,836 (84.6) |
131,514 (15.4) |
| " |
5th Amendment |
Recognition of religions |
" |
903,659 (50.7) |
721,003 (84.4) |
133,430 (15.6) |
| 5 July 1979 |
6th Amendment |
Adoption board |
2,179,466 |
623,476 (28.6) |
601,694 (99.0) |
6,265 (1.0) |
| " |
7th Amendment |
Senate reform |
" |
622,646 (28.6) |
552,600 (92.4) |
45,484 (7.6) |
| 7 September 1983 |
8th Amendment |
Prohibition of abortion |
2,358,651 |
1,265,994 (53.7) |
841,233 (66.9) |
416,136 (33.1) |
| 14 June 1984 |
9th Amendment |
Votes for non-citizens |
2,399,257 |
1,138,895 (47.5) |
828,483 (75.4) |
270,250 (24.6) |
| 26 June 1986 |
10th Amendment Bill, 1986 |
Divorce |
2,436,836 |
1,482,644 (60.8) |
538,279 (36.5) |
935,843 (63.5) |
| 26 May 1987 |
10th Amendment |
Single European Act |
2,461,790 |
1,085,304 (44.1) |
755,423 (69.9) |
324,977 (30.1) |
| 18 June 1992 |
11th Amendment |
Maastricht Treaty |
2,542,840 |
1,457,219 (57.3) |
1,001,076 (69.1) |
448,655 (30.9) |
| 25 November 1992 |
12th Amendment Bill, 1992 |
Abortion restrictions |
2,542,841 |
1,733,309 (68.2) |
572,177 (34.6) |
1,079,297 (65.4) |
| " |
13th Amendment |
Right to travel |
" |
1,733,821 (68.2) |
1,035,308 (62.4) |
624,059 (37.6) |
| " |
14th Amendment |
Abortion information |
" |
1,732,433 (68.1) |
992,833 (59.9) |
665,106 (40.1) |
| 24 November 1995 |
15th Amendment |
Divorce |
2,628,834 |
1,633,942 (62.2) |
818,842 (50.3) |
809,728 (49.7) |
| 28 November 1996 |
16th Amendment |
Bail |
2,659,895 |
777,586 (29.2) |
579,740 (74.8) |
194,968 (25.2) |
| 30 October 1997 |
17th Amendment |
Cabinet confidentiality |
2,688,316 |
1,268,043 (47.2) |
632,777 (52.6) |
569,175 (47.4) |
| 22 May 1998 |
18th Amendment |
Amsterdam Treaty |
2,747,088 |
1,543,930 (56.2) |
932,632 (61.7) |
578,070 (38.3) |
| " |
19th Amendment |
Belfast Agreement |
" |
1,545,395 (56.3) |
1,442,583 (94.4) |
85,748 (5.6) |
| 11 June 1999 |
20th Amendment |
Local government |
2,791,415 |
1,425,881 (51.1) |
1,024,850 (77.8) |
291,965 (22.2) |
| 7 June 2001 |
21st Amendment |
Death penalty |
2,867,960 |
997,885 (34.8) |
610,455 (62.1) |
372,950 (37.9) |
| " |
23rd Amendment |
ICC |
" |
997,565 (34.8) |
629,234 (64.2) |
350,512 (35.8) |
| " |
24th Amendment Bill, 2001 |
Nice Treaty |
" |
997,826(34.8) |
453,461 (46.1) |
529,478 (53.9) |
| 6 March 2002 |
25th Amendment Bill, 2002 |
Abortion restrictions |
2,923,918 |
1,254,175 (42.9) |
618,485 (49.6) |
629,041 (50.4) |
| 19 October 2002 |
26th Amendment |
Nice Treaty |
2,923,918 |
1,446,588 (49.5) |
906,317 (62.9) |
534,887 (37.1) |
| 11 June 2004 |
27th Amendment |
Citizenship |
3,041,688 |
1,823,434 (59.9) |
1,427,520 (79.2) |
375,695 (20.8) |
| 12 June 2008 |
28th Amendment Bill, 2008 |
Treaty of Lisbon |
3,051,278 |
1,621,037 (53.1) |
752,451 (46.6) |
862,415 (53.4) |
