Sergei Stanislavovich Udaltsov is a Russian left-wing political activist. He is the unofficial leader of the Vanguard of Red Youth (AKM). In 2011 and 2012, he helped lead a series of protests against Vladimir Putin. In 2014 he was sentenced to 4¹⁄₂ years in a penal camp for organizing the May 2012 protest which ended in violence between the police and demonstrators.

Presidential elections were held in Russia on 18 March 2018. Incumbent president and dictator Vladimir Putin was eligible to run. He declared his intent to do so on 6 December 2017 and was expected to win. This came following several months of speculation throughout the second half of 2017 as Putin made evasive comments, including that he had still not decided whether he would like to "step down" from the post of president, that he would "think about running", and that he "hadn't yet decided whether to run for another term". Different sources predicted that he would run as an independent to capitalize more support from the population, and although he could also have been nominated by the United Russia party as in 2012, Putin chose to run as an independent. Among registered voters in Russia, 67.5% voted in the election.