Protesters voiced their anger against Prime Minister Vladimir Putin and the alleged election fraud in the far eastern part of Russia on Saturday.
Around 1,000 people walked in a rally rallied in the southern Siberian city of Barnaul, protesting against Putin.
Smaller groups of protesters were seen in various other cities like Krasnoyarsk, Vladivostok, Chita and Khabarovsk in eastern Russia, RIA Novosti reported.
At least 30,000 people are expected to gather in Moscow to showcase their anger over the poll results. A strong public gathering was also expected to be staged at St. Petersburg.
Putin warned that the demonstrators had the right to assemble and protest but the security personnel would take the legal actions in order to maintain law and order in the country, according to RIA Novosti.
Police have detained around 1,000 people so far.
Putin´s United Russia party led government claimed the elections held on Dec 4 as fair.