That's fairly easy, too, since there is usually a direct mapping between addresses and precincts.
But to cast a fraudulent vote it takes more than doing that, it takes finding that information and using it to vote before the legitimate voter does -- and to do it undetected requires the legitimate voter not voting after you've done it, either.
To scale such an effort up to materially affect an election would be incredibly difficult to do, and easy to spot.
> If that's really stopping people from voting, then there's something wrong with our DMVs, etc.
The DMV sucks: this is news?
This is one reason we know that in-person voter fraud is rare: because there are very few provisional ballots filed due to impersonation.
Of course I don't have to _imagine_ this scenario, because it happens every year.
Real harm, happening right now vs an imaginary harm that happens so rarely we essentially have to guess what form it would take... this is an easy one.
(re: guessing what form it would take -- if we're going to imagine a fake voting threat, we can just as easily imagine that these same people have the capability to get fake licenses. That happens _all the time_, after all, in college towns across the country. Amazingly these people seem to all use their fake licenses to get a drink, and not to go vote illegally for other people. Silly them!)
Sure. But sometimes, it seems like the "something wrong with our DMVs" isn't a separate problem, but a fairly deliberate effort to exploit the danger directly created by adding the functioning of the DMV as a dependency in the electoral process. [0]
[0] e.g., http://www.msnbc.com/msnbc/alabama-dmv-closings-draw-call-fe...
Its harder to do that when they are directly making it harder for people who tend to disagree with them to vote at all.
Bingo? :)
-------
A -> B -> C
B -> C
But shitty DMV's aside, even if (A) is near negligible effort (which we'd probably both say isn't true for DMV's), then the first process will always stop people from voting compared to the second, right? no matter how "easy" (A) is. Engagement funnels FTW :)