During the assembly it was announced that HKS, Hrast and the Generation of Renewal (GO), three smaller conservative and right-wing parties, will become defunct to merge and work together as the Croatian Sovereignists.

[11][12] On 17 December, the presidency of the Croatian Sovereignists launched proceedings to expel Hrvoje Zekanović from the party, which was conducted on 17 January.

Hrvoje Zekanović announced that the Sovereignists will start collecting signatures for a referendum and claimed that "not a single citizen of the Republic of Croatia out of two-thirds who voted for the EU knew that we had committed ourselves to introduce the euro within a certain period of time, i.e. enter the eurozone.

[18] On 24 October 2021, the "Protect the Croatian Kuna" initiative started collecting signatures demanding a referendum.

Sovereignist Member of Parliament Marko Milanović Litre said in an interview, that already after five days 157,000 signatures were collected.