Up to 15,000 demonstrators prepared to take to Moscow's streets this weekend for another round of protests over the results.Boris Nemtsov, an opposition party leader, has also called for new elections.
With popular anger over the elections showing no signs of abating, the last leader of the Soviet Union added his voice to those from the country's liberal opposition who have demanded the annulment of an election that international observers said was riddled with fraud.
As Russian-language social networking sites indicated last night that anti-Kremlin activists were trying to organise at least 81 protests in other Russian towns and cities this Saturday, Mr Gorbachev said: "The results do not reflect the will of the people.
"Therefore I think they (Russia's leaders) can only take one decision – annul the results of the election and hold new ones. With every day that passes more and more Russians do not believe that the official results were honest.
"Ignoring public opinion discredits the authorities and is destabilising the situation."