Bunreacht na hÉireann
- 1959: First Past the Post electoral system (1)
- 1968: Constituency boundary guidelines
- 1968: First Past the Post electoral system (2)
- 1972: Accession to the European Communities
- 1972: Voting Age
- 1972: Recognition of religions
- 1979: Adoption
- 1979: University representation in the Seanad
- 1983: Restriction of abortion
- 1984: Extension of voting rights in Dáil elections
- 1986: Divorce (1)
- 1987: Single European Act
- 1992: European Union (Maastricht Treaty)
- 1992: Abortion restrictions (1)
- 1992: The right to travel
- 1992: Abortion information
- 1995: Divorce (2)
- 1996: Bail
- 1997: Cabinet confidentiality
- 1998: Amsterdam Treaty
- 1998: Good Friday Agreement
- 1999: Local Government
- 2001: Death Penalty
- 2001: International Criminal Court
- 2001: Treaty of Nice (1)
- 2001: Abortion restrictions (2)
- 2002: Treaty of Nice (2)
- 2004: Citizenship
- 2008: Treaty of Lisbon (1)
- 2009: Treaty of Lisbon (2)
- 2011: Oireachtas Inquiries
- 2011: Judges' Remuneration
- 2012: European Fiscal Compact
- 2012: Children's Rights
- 2013: Abolition of the Seanad (scheduled for 4 October 2013)
- 2013: Court of Appeals (scheduled for 4 October 2013)
Northern Ireland
- 1973: Remaining in the United Kingdom
- 1975: Continued UK membership of the EEC
- 1998: Belfast (Good Friday) Agreement
- 2011: Alternative Vote
