Certain provisions of the president's project are essential for party formation and development, he added.
"Provision of imperative mandate is quite revolutionary. Changes of this kind might not appeal to some deputies; one can already observe a certain uproar in factions," said the deputy.
For his part, Ivan Melnikov, deputy head of the Russian Federation Communist Party and member of the Communist faction, told RIA Novosti that most proposals speak of changes in franchise in favor of the ruling party. Once the blocs are dismantled, the number of participants in the election process will be cut drastically, he continued.
"By diminishing the number of electors' unauthentic signatures to five percent, with a ban on registering the lists of candidates, they want to get rid of disagreeable political forces," argued Melnikov.
"Controversy is certain to arise over the idea of one single day of elections."
At the same time, went on Melnikov, the faction of the Russian Federation Communists, is likely to support the imperative mandate norm. "But we consider it more urgent to have norms of MPs' recalling and their responsibility for failure to fulfil their voters' mandates. The bill is now lacking such provisions."
The faction "Rodina" (Fatherland) supports the introduction of imperative mandate preventing deputies from changing factions, said Rodina faction member Ivan Kharchenko.
"Defecting from one faction to another is a betrayal of principles of one's electors," said Kharchenko. He also declared in favor of a ban on electoral blocs.
In his opinion, parties should be elected to the Duma one by one while in parliament several parties can unite into a coalition.
Another Rodina member, Duma Vice-Speaker Sergey Baburin argues that a ban of blocs was a wrong idea.
Baburin has backed the imperative mandate proposal, noting that amendments depriving deputies of their mandate if they change factions and the president's other proposals were a world practice.
Baburin believes that the amendments were to be passed without change.
The president's law suit submitted at the State Duma to change the election legislation provides for several innovations. These are, among others, the expulsion of election blocs from the election process and termination of deputy powers in case of the deputy's defection to another faction.
The bill provides for a single day of voting in the Russian Federation at elections of all levels-the second Sunday in March (the reserve day is the first Sunday in October).
There are plans to considerably expand government financing of parties winning electors' support at federal elections.
The number of unauthentic or invalid signatures of electors, which prevent such a list of candidates from being registered, is cut from 25 to 5 percent.
The project also suggests electronic voting and refusal from rigid federal regulation of the size of an election deposit.
