I agree that it's a disgrace how we execute elections across the country. I mean, 20-whatever years ago Florida was a national embarrassment and in short order they turned it around and are now one of the most efficient. But recently it's become accepted/the norm, possibly deliberate, for multiple states across the country to be unable to efficiently tally the most significant elections they hold And it's fascinating that they all seem to be among the so-called swing states.
However, I think the last thing we want is heavy federal involvement in national elections. An unscrupulous federal coalition could effectively end truly fair/competitive elections. Granted, voters in certain states may never demand their respective states get their act together, but that's their prerogative.