Kostenian Union

The Party of the Kostenian Union (Kostenian: Skipðez je á Łeny Kastensk) is a Tuarist and Kostenian nationalist party active in the Socialist Federal Republic of Kosteniâ and to a lesser degree within the Duchy of Kostenia despite its status as an outlawed party.

The party was founded in 1899 by a group of Kostenian Levist Socialist intellectuals. They sought an end to the assimilation and destruction of Kostenian native culture by the governments of the Obradinian Empire and Empire of Troiya. The party remained in the wild for most of the 1910s but began gain traction in the 1920s under the government of Danijal Varisk, who was sympathetic to Kostenian autonomism. However after Vyðrin's Self-coup the party was banned, just like all other opposition parties. In the 1940s the party began to shift from a Socialist perspective to a Tuarist one, taking influence from the 1934 Krantir Tuarist Coup.

In modern times the party is once again legal and does modestly well in Kostenian regional elections, usually coming second or third place but never out matching the Communist Party of Sentryzijâ.