A referendum on two issues will be held in Croatia

Croatia

Croatia , officially the Republic of Croatia , is a unitary democratic parliamentary republic in Europe at the crossroads of the Mitteleuropa, the Balkans, and the Mediterranean. Its capital and largest city is Zagreb. The country is divided into 20 counties and the city of Zagreb. Croatia covers ...

 in early 2012. The date of the referendum will be decided by the signing of the Accession Treaty of Croatia to the European Union

European Union

The European Union is an economic and political union of 27 independent member states which are located primarily in Europe. The EU traces its origins from the European Coal and Steel Community and the European Economic Community , formed by six countries in 1958...

; the referendum will be held within thirty days of that date. Two questions will be asked:

• the first issue concerns the accession of Croatia to the European Union
  Accession of Croatia to the European Union
  Croatia applied for European Union membership in 2003, and the European Commission recommended making it an official candidate in early 2004. Candidate country status was granted to Croatia by the European Council in mid-2004...
  
  , it was discussed at length and it was also a major topic in the changes to the Constitution of Croatia
  Constitution of Croatia
  The current Constitution of the Republic of Croatia was adopted by the Parliament of the Republic of Croatia on December 22, 1990. It replaced the Constitution of 1974 ratified in socialist Yugoslavia...
  
   made in 2010.
• the second issue will decide whether in the future referendums will have to be called if 200,000 voters' signatures are collected within thirty days to request one, which would change the current system where over 400,000 signatures in 15 days are required.

European Union issue

Croatia has been negotiating with the EU

European Union

The European Union is an economic and political union of 27 independent member states which are located primarily in Europe. The EU traces its origins from the European Coal and Steel Community and the European Economic Community , formed by six countries in 1958...

 since October 2005 and finished the talks on June 30th, 2011. A referendum on the issue must be held, according to the Croatian Constitution

Constitution of Croatia

The current Constitution of the Republic of Croatia was adopted by the Parliament of the Republic of Croatia on December 22, 1990. It replaced the Constitution of 1974 ratified in socialist Yugoslavia...

, and the Prime Minister has stated late 2011, before the 2011 general election, as the most likely date. However, these elections will take place on 4 December 2011, so the referendum probably will not be held before February 2012.

Opinion polling

Poll source	Date(s) administered/published	Sample size	For/Favour	Against/Oppose	Undecided
Ipsos Puls for Nova TV	25 November 2011	1,000	61%	32%	7%
Ipsos Puls for Nova TV	25 October 2011	1,000	57%	36%	7%
Ipsos Puls for Nova TV	26 September 2011	1,000	58%	31%	11%
CRO Demoskop	12 September 2011	1,300	56.1%	33.8%	10.1%
Ipsos Puls for Nova TV	25 July 2011	1,000	60%	33%	7%
CRO Demoskop	1 and 2 July 2011	1,300	62.2%	30.5%	7.3%
Hendal for HRT	28 June 2011		56%	34.2%	9.8%
Ipsos Puls for Nova TV	25 May 2011	1,000	56%	39%	5%
Mediana Fides for Jutarnji list	15 and 16 April 2011	700	23%	49.8%	26.4%
Ipsos Puls for Nova TV	16 April 2011	600	38%	52%	10%
On April 15, 2011 former Croatian general Ante Gotovina Ante Gotovina Ante Gotovina is a former Senior Corporal of the French Foreign Legion and former Lieutenant General of the Croatian Army who served in the Croatian War for Independence...  is sentenced to 24 years in prison by ICTY after being found guilty of war crimes during Operation Storm Operation Storm Operation Storm is the code name given to a large-scale military operation carried out by Croatian Armed Forces, in conjunction with the Army of the Republic of Bosnia and Herzegovina, to gain back control of parts of Croatia which had been claimed by separatist ethnic Serbs, since early... .
Ipsos Puls for Nova TV	12 March 2011	1,000	55%	38%	7%
Mediana Fides for Jutarnji list	21 March 2011		56.3%	37.3%	6.4%
Ipsos Puls for Nova TV	12 March 2011	600	51%	37%	12%
CRO Demoskop	4 March 2011	1,300	48.9%	41%	10.1%
CRO Demoskop	7 February 2011	1,300	49.4%	40.3%	10.2%
Ipsos Puls for Nova TV	25 December 2010	1,000	47%	40%	12%
CRO Demoskop	30 November and 1 December 2010	1,300	49.2%	39.1%	11.7%
Ipsos Puls for Nova TV	25 November 2010	1,000	53%	35%	12%
Ipsos Puls	1-15 November 2010	1,000	64%	29%	7%
CRO Demoskop	2 and 3 November 2010	1,300	49.6%	39.8%	10.6%
Ipsos Puls for Nova TV	29 October 2010	1,000	50%	35%	15%
CRO Demoskop	4 and 5 October 2010	1,300	50.5%	39.4%	10.1%
Ipsos Puls for Nova TV	28 July 2010	1,000	55%	42%	7%
CRO Demoskop	3 and 4 May 2010	1,300	51.1%	39%	9.9%
CRO Demoskop	31 March and 1 April 2010	1,300	50.8%	39.9%	9.3%
CRO Demoskop	3 February 2010	1,300	48.4%	40.1%	11.5%
CRO Demoskop	4 and 5 January 2010	1,300	48.9%	39.9%	11.2%
Ipsos Puls for Nova TV	31 December 2009		43%	43%	13%
CRO Demoskop	30 November and 1 December 2009	1,300	49.1%	39.1%	11.8%
CRO Demoskop	31 September and 1 October 2009	1,300	50.9%	39.5%	9.6%
CRO Demoskop	3 September 2009	1,300	47%	42.6%	10.4%
CRO Demoskop	1 and 2 July 2009	1,300	47.8%	41.9%	10.3%
Ipsos Puls for Nova TV	31 March 2009	1,000	50%	39%	11%
Ipsos Puls for Nova TV	28 February 2009	1,000	51%	36%	13%
CRO Demoskop	5 February 2009	1,300	51.8%	39.2%	9%
CRO Demoskop	3 and 4 October 2008	1,300	57.3%	33.2%	9.5%
CRO Demoskop	31 July and 1 August 2008	1,300	55.5%	36.7%	7.8%
CRO Demoskop	4 July 2008	1,300	54.7%	N/A	N/A
CRO Demoskop	2 May 2008	1,300	53.9%	N/A	N/A
CRO Demoskop	4 February 2008	1,300	49%	N/A	N/A
CRO Demoskop	7 January 2008	1,300	49.6%	N/A	N/A

Note: For an issue in question to be accepted on a referendum, more than 50% of those who voted must approve, no matter how many registered voters participated in the vote.