The number of people in the country will have a marginal effect on the time it takes to count the votes, since each voting station counts the votes received the

The number of people in the country will have a marginal effect on the time it takes to count the votes, since each voting station counts the votes received there. The central system where the results are registered might need a database with 30x more rows, but that'd hardly be a problem. "Why not do it electronically, assuming it's done properly": that's just the problem - it can't be done properly.