Addressing supporters, Kasyanov said his movement -- the Popular Democratic Union (NDS) -- would fight "for honest and fair elections" and strive to prevent the authorities from rigging votes.
Kasyanov also said his party would consult with other political forces with a view to drafting a long-term development program for Russia.
Kasyanov last December failed to win over the leadership of the Democratic Party.
(RIA Novosti, ITAR-TASS, lenta.ru)
RFE/RL In Russian
RFE/RL In Russian
UPDATED CONSTANTLY: Visit RFE/RL's Russian-language website, featuring news, analysis, features, streaming audio, and more, in Russian, from RFE/RL's Russian Service.
