It is wild to me that in the US you’re not automatically registered to vote. The idea that you have to go through a manual process to exert one of your most basic constitutional rights is unfathomable to me.
Here when you turn 18 you can just vote. It’s that simple. No registration, no ticking a checkbox somewhere, you can simply go out there and vote the moment you’re 18.
Nothing about the US system is particularly geared to prevent double voting.
I get that you don’t have a federal register (something you should really fix tbh) but requiring manual registration when you could, oh idk, simply register people when they are born and then later automatically provide them a unique ID they can vote with? (I’m not even talking a government ID for the purposes of identifying yourself to law enforcement and stuff, I’m talking even just a voter ID for the sake of voting only)
Then have part of the number in that ID identify the state you’re from if you want to prevent crossing borders to double vote (kinda like how credit card numbers have that info on them).
It’s what they do here anyway, I’ve had an ID since I was like 4, and it’s with that document that I and everyone else votes.
Though I know the US is probably too anti-democratic for this and none of the parties in power want to change jack.