Latvian language
Upper Latvian dialect is spoken in Eastern Latvia. It is set apart from rest of the Latvian by number of phonetic differences. The dialect has two main varieties – Selonian and Non-Selonian. There is a standard language, the Latgalian language, which is based on deep Non-Selonian varieties spoken in south of Latgale. The term "Latgalian" is sometimes also applied to all Non-Selonian varieties or even the whole dialect. However, it is unclear if it is accurate to use the term for any varieties besides the standard language. While the term may refer to varieties spoken in Latgale or by Latgalians, not all speakers identify as speaking Latgalian, for example, speakers of deep Non-Selonian varieties in Vidzeme explicitly deny speaking Latgalian.
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.