It is a component of the Kanak Socialist National Liberation Front (FLNKS) along with the Caledonian Union.

Since 2021, leader Louis Mapou has been President of the Government of New Caledonia[1] The term UNI has now been changed to include a broad coalition of: The Palika is by far the largest of the four parties.

The term UNI was first applied in 1995 to refers to a dissident list from the FLNKS led by Paul Néaoutyine in the North Province.

Since then, the term UNI refers to the broad coalition led by the Palika in various provincial elections since then.

In the 2009 provincial elections, the party won 10 seats (of which 8 went to the Palika, the other two to the UC-R and RDO respectively) in the Congress of New Caledonia and around 6.87% of the vote.