"We are preparing for reporting and an internal election campaign, and party vote - primaries that will take place in June-July," Valery Ryazansky said.
The Kremlin-backed party, which dominates the lower house of parliament State Duma and regional governments, will hold primaries - common in the United States and a novelty for Russia - to determine membership ratings and select candidates for the general elections, Ryazansky said.
Ryazanksy said United Russia had targeted right-to-the center voters focusing both on market reforms and welfare problems, while many political parties demonstrated a noticeable tilt to the left at regional elections March 11.
United Russia consolidated its grip on most legislatures after the regional polls, but it was overridden by Just Russia in the southern Stavropol region. A new Kremlin project designed to counterbalance the dominant "party of power" and poach votes from the Communists, Just Russia proactively used welfare policies in its campaign.
The legislature polls are seen as a "rehearsal" ahead of elections to the State Duma in December and a presidential poll in March 2008.
Local polls were held in the wake of legislative amendments that raised the vote threshold for the State Duma, increased membership requirements for political parties, abolished the 20% threshold for voter turnout and canceled the "against all candidates" option on election ballots.
Rights groups have slammed the changes as undemocratic, but the Kremlin said they were needed to safeguard the development of Russian democracy from irresponsible marginal parties.
The lawmaker also said the party planned to invite famous athletes and actors to its ranks to add to "the party pallet."
