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.
Russian language in Latvia
The leading coalition of Unity, Zatlers' Reform Party and the National Alliance urged voters to participate in the referendum and reject Russian as a second state language. Former presidents of Latvia Guntis Ulmanis, Vaira Vīķe-Freiberga and Valdis Zatlers called voters to take part in the referendum and vote against Russian as the second state language. The president at the time Andris Bērziņš initially advised people to ignore the vote gathering, dismissing it as a provocation, but when it came to a referendum also called voters not to support Russian as the second state language and said he would resign should the referendum succeed. Several notable Latvian Russians, including sculptor Gļebs Panteļejevs, stage director Mihails Gruzdovs, and journalist Marina Kosteņecka, as well as the President of Russian fraternity Fraternitas Arctica Dmitrijs Trofimovs also called for a 'no' vote.