The Cossack Party of the Russian Federation has completed its registration with the Justice Ministry, RIA-Novosti reported Thursday.
Established in late November, the party's executive committee is headed by Alexander Smirnov.
In April, a law went into force lowering the minimum number of signatures required for registering a party from 40,000 to 500.
More than 200 parties have registered with the Justice Ministry since then, the state-run news agency reported.
Opposition leaders have complained that the leniency in registering parties has diluted the movement's strength.