What is being billed as Russia's largest ever internet election is said to have been attacked by hackers.Critics of President Vladimir Putin are holding an online vote to choose opposition leaders for a Coordination Committee.
Some voters have reported problems logging into the system.
Organisers say the election is a step towards democracy.
"I believe that if there aren't normal elections in the country, if the government doesn't want to organise elections without considering the major protests, citizens themselves must learn how to hold elections, without those crooks and thieves, without the state," said opposition leader Sergei Udaltsov.
Putin has described his critics as docile internet dwellers, with "no unified programme."
As the elections got underway crowds gathered in central Moscow to demonstrate against the arrest of leftist activist Konstantin Lebedev, who is accused of plotting mass anti-government riots.
Published on Oct 20, 2012 by Euronews