"However, there are many obstacles to the introduction of blockchain into the Russian electoral system. And the most obvious of them may be that many potential voters, especially those of old age, may find it difficult to learn a new method of voting".
Actually Polys has also developed a solution for the elderly and those less familiar with IT technologies — mixed online/offline voting using unique codes. Voters receive the relevant codes in print or some other format and can then vote on a public computer or their own device and all votes will be given into a blockchain. Learn more at: https://docs.polys.me/user-guide/creating-a-vote
RE: Elections in the blockchain: whether the vote without ballot box stuffing and fraud?