Introduction. The article discusses the aspects of the conduct of the 1912 election campaign by the All-Russian National Union in the 4rd State Duma. Methods. On the basis of the scientific literature, the materials of the pre-revolutionary periodicals and archival documents, the author considers the main points of the election campaign of the All-Russian National Union (ARNU) - the party of Russian nationalists, which had one of the most influential factions in the III and 4rd State Duma. Analyzing the preparatory activities of the ARNU on the eve of the elections, its publishing and campaigning activities, the ideological platform, relations with other parties, the government and local authorities. It also discusses the results of the election campaign of the ARNU, as well as the influence of Russian nationalists on the subsequent work of the 4rd State Duma. Conclusion. The main reasons for the success of the ARNU in the elections were the support of nationalists from the government and local administration