Simple referendum:
“No person may vote in more than one location on Election Day. Violators will be punished by no less than six months in jail and/or a $5000 fine.”
While the law can be ignored, it would at least be on the books. You could even add a $300 reward for anyone who reports a violation that leads to a conviction.
[You could even add a $300 reward for anyone who reports a violation that leads to a conviction.]
Excellent idea.
I don't think that allowing multiple voting was the intention of the original law. I believe it was to allow voters in heavily Democratic districts, where their vote would be overkill, to temporarily migrate to a district where the vote would be close, and tip the balance in their favor.