The funny thing is that it is GOP/conservatives that are likely to cheat at this.

But the real issue is not the single voters like this, but those that control the electronic voting machines. Stalin had it right when he said that those that matter, are those that count the ballots.
More needs to be done about that. What is interesting is that in a number of areas that switched to electronic are now voting GOP, AND that the ballots do not match the stats, including exit polls.

However, we DO need to require an ID for every submitted ballot. That means not just election day, but early voting as well. And states need to make it easy for all to get their IDs. Easiest way is to work with USPO. They have offices spread all over and either do, or have done, passports.