But this same lack of efficiency allows governments to make it harder to vote. Eliminate voting locations in regions where those who vote against your party are more likely. Move voting to days that the less-powerful can't take off from their jobs. Paper votes "go missing" because there's reason to believe the box of them contained too many that those in power didn't like.

Making voting hard makes the system ripe for abuse, and that's exactly what we see happen all the time.

What we need is a system that is efficient and safe. There are cryptographic voting systems in which the government publishes the entire result; everyone can see that their own vote (only) was counted appropriately; anyone can see that the overall vote was fairly counted; empowered auditors can randomly audit to ensure all votes are real. That is far superior to the existing, corruptible system.

Edit: adding some conditions on the crypto voting systems.