Russia's Right Cause party filed on Monday its candidate list for State Duma elections in December. The list is headed by joint party chief Andrei Dunayev. The second spot is occupied by the party's other joint leader - former presidential candidate Andrei Bogdanov. Tennis player Anna Chakvetadze is third in the list. Russian billionaire Mikhail Prokhorov, 46, quit as Right Cause party head in mid-September after an internal party dispute. The split came to a head on September 15 when two Right Cause parties - Prokhorov's opponents and supporters - met in different buildings in Moscow for their congresses in the run-up to the parliamentary elections in December. Some Russian media have claimed the party was deliberately neutered by pro-Kremlin figures concerned about Prokhorov's emergence as a political force.