This is how we can win elections in “bad cities”. The day before the election, spread flyers all over town advertising free obamacash somewhere on election day. The ensuing riot when it is discovered there is no obama cash, will prevent the residents from voting 10 or 20 times each for the democrat.
That's the whole point of "early voting".
It lets the same people vote two or three times a day, in different precincts using different identies, over the entire duration of the "early voting" period, without interfering with meth-cooking, siesta, or midnight basketball.