The answer is vigilant poll watchers at all polling places on Election Day.
Agreed.
Paging the most vigilant Floridian of all time!
The guy is famously indefatigable. Will count chads over, and over, and over again -- as many times as it takes -- until his guy wins!
With early voting and absentee ballots, the really big opportunities for vote fraud are before election day and do not happen at the polling places.