"I can now say with 99% certainty that our party will not nominate its own candidate, but will make a decision on supporting another contender," party leader Sergei Mironov said, adding that a decision on who to back would be made at a meeting of the party's Central Council on December 22.
Mironov, who ran for president in 2004, said earlier he would not be taking part in the 2008 polls. Instead, he said his party could give its support to the Kremlin-backed United Russia candidate to be nominated mid-December.
The party was established in the fall of 2006 as a result of a merger between the Rodina (Motherland), Russian Party of Pensioners and Russian Party of Life. The party received 7.75% of the vote at Sunday's parliamentary elections, which was the first time the faction had taken part in the elections.
Mironov has already received two refusals to join forces from Gennady Zyuganov, leader of the Communist party, which received 11.57% of the vote.