Latgalian language
Originally Latgalians were a tribe living in modern Vidzeme and Latgale. It is thought that they spoke the Latvian language, which later spread through the rest of modern Latvia, absorbing features of the Old Curonian, Semigallian, Selonian and Livonian languages. The Latgale area became politically separated during the Polish–Swedish wars, remaining part of the Polish–Lithuanian Commonwealth as the Inflanty Voivodeship, while the rest of Latvians lived in lands dominated by Baltic German nobility. Both centuries of separate development and the influence of different prestige languages likely contributed to the development of modern Latgalian as distinct from the language spoken in Vidzeme and other parts of Latvia.
Latvian Russian Union
The party emphasizes issues important to the Russian minority in Latvia. It requests the granting of Latvian citizenship to all of Latvia's remaining non-citizens and supports Russian and Latgalian as co-official languages in municipalities where at least 20% of the population are native speakers of such a language. It supports stronger ties with Russia and was the only major political organization to oppose Latvia's membership in NATO. The Latvian Russian Union is very socially conservative, as is its voter base. Economic issues are less emphasized but the party's economic positions tend to be left-wing.