1998 Treaty of Amsterdam: Yes 61.7% No 38.3%
Referendum on the Eighteenth Amendment of the Constitution Bill 1998 (Treaty of Amsterdam)
| Constituency | Yes | No | Turnout | Spoilt | ||
|---|---|---|---|---|---|---|
National Result | 61.7% (932,632) | | 38.3% (578,070) | | 56.2% (1,543,930) | 2.2% (33,228) |
| 63.7% (30,122) | | 36.3% (17,181) | | 56.2% (48,622) | 2.7% (1,319) | |
| 65.2% (32,044) | | 34.8% (17,115) | | 60.8% (50,513) | 2.7% (1,354) | |
| 64.3% (22,939) | | 35.7% (12,709) | | 51.5% (36,603) | 2.6% (955) | |
| 57.3% (19,780) | | 42.7% (14,725) | | 55.3% (35,344) | 2.4% (839) | |
| 54.5% (20,715) | | 45.5% (17,326) | | 53.3% (38,832) | 2.0% (791) | |
| 57.8% (15,682) | | 42.2% (11,472) | | 59.0% (27,990) | 3.0% (836) | |
| 58.0% (28,460) | | 42.0% (20,606) | | 58.2% (49,892) | 1.7% (826) | |
| 58.5% (15,632) | | 41.5% (11,085) | | 57.4% (27,568) | 3.1% (851) | |
| 62.5% (17,843) | | 37.5% (10,718) | | 55.9% (29,157) | 2.0% (596) | |
| 60.7% (16,492) | | 39.3% (10,697) | | 54.6% (27,908) | 2.6% (719) | |
| 56.9% (18,744) | | 43.1% (14,186) | | 52.8% (33,533) | 1.8% (603) | |
| 63.8% (24,912) | | 36.2% (14,159) | | 60.6% (39,603) | 1.3% (532) | |
| 59.0% (24,832) | | 41.0% (17,239) | | 65.1% (42,773) | 1.6% (702) | |
| 59.7% (21,523) | | 40.3% (14,539) | | 61.5% (36,503) | 1.2% (441) | |
| 57.5% (19,905) | | 42.5% (14,705) | | 59.2% (35,109) | 1.4% (499) | |
| 64.2% (36,281) | | 35.8% (20,227) | | 63.4% (57,363) | 1.5% (855) | |
| 57.1% (22,349) | | 42.9% (16,782) | | 59.4% (39,795) | 1.7% (664) | |
| 60.8% (22,298) | | 39.2% (14,376) | | 59.5% (37,310) | 1.7% (636) | |
| 57.1% (22,604) | | 42.9% (16,959) | | 52.3% (40,106) | 1.4% (543) | |
| 59.1% (22,495) | | 40.9% (15,571) | | 56.1% (38,567) | 1.3% (501) | |
| 65.4% (34,530) | | 34.6% (18,268) | | 62.2% (53,652) | 1.6% (854) | |
| 68.2% (21,590) | | 31.8% (10,070) | | 52.7% (32,546) | 2.7% (886) | |
| 62.2% (23,470) | | 37.8% (14,285) | | 48.9% (38,730) | 2.5% (975) | |
| 55.4% (14,126) | | 44.6% (11,394) | | 50.7% (26,197) | 2.6% (677) | |
| 58.5% (14,410) | | 41.5% (10,232) | | 53.3% (25,427) | 3.1% (785) | |
| 63.8% (18,479) | | 36.2% (10,485) | | 54.4% (29,406) | 1.5% (442) | |
| 65.0% (15,644) | | 35.0% (8,442) | | 51.3% (24,564) | 1.9% (478) | |
| 61.1% (27,839) | | 38.9% (17,690) | | 55.1% (46,585) | 2.3% (1,056) | |
| 63.5% (26,241) | | 36.5% (15,113) | | 54.3% (42,286) | 2.2% (932) | |
| 62.1% (15,287) | | 37.9% (9,348) | | 52.5% (25,420) | 3.1% (785) | |
| 66.7% (23,255) | | 33.3% (11,600) | | 56.1% (35,896) | 2.9% (1,041) | |
| 65.6% (28,137) | | 34.4% (14,724) | | 60.5% (43,643) | 1.8% (782) | |
| 65.2% (28,621) | | 34.8% (15,284) | | 52.1% (45,244) | 3.0% (1,339) | |
| 64.8% (31,660) | | 35.2% (17,189) | | 54.1% (49,811) | 1.9% (962) | |
| 65.6% (23,487) | | 34.4% (12,290) | | 57.0% (36,815) | 2.8% (1,038) | |
| 60.9% (18,137) | | 39.1% (11,649) | | 57.4% (30,611) | 2.7% (825) | |
| 62.9% (18,240) | | 37.1% (10,764) | | 57.9% (29,789) | 2.6% (785) | |
| 62.2% (23,002) | | 37.8% (14,005) | | 54.3% (37,865) | 2.3% (858) | |
| 63.5% (16,310) | | 36.5% (9,385) | | 54.7% (26,392) | 2.6% (697) | |
| 64.5% (27,860) | | 35.5% (15,326) | | 52.6% (44,293) | 2.5% (1,107) | |
| 59.5% (26,655) | | 40.5% (18,150) | | 56.9% (45,667) | 1.9% (862) | |