Referendums in Poland

1920 and 1921

• 11 July 1920 – Referendum on Warmia, Mazury and Powiśle
• 20 March 1921 – Referendum on Upper Silesia

  1946 and 1987

• 30 June 1946 – People's referendum
• 29 November 1987 – Referendum on political and economic reforms

  Since 1989

• 18 February 1996: two referendums:
• * Referendum on enfranchisement of citizens
• * Referendum with four questions on privatised assets
• 25 May 1997 – Referendum on the Constitution
• 7–8 June 2003 – Referendum on joining the EU
• 6 September 2015 – Referendum with three questions on Sejm representation, political party funding, and tax law dispute resolution:
• * Introducing single-member constituencies for Sejm elections, on maintaining state financing of political parties and introducing a presumption in favour of the taxpayer in disputes over the tax law.