http://homepage.cs.uiowa.edu/~dwjones/voting/cogel/
Jones on Human Factors, Slide 5
What happened in Okaloosa, Manatee, Columbia and Escambia Counties?
These precinct count system can detect overvoted ballots, returning them to the voter for a second chance.
Columbia County -- pollworker actions defeated this feature!
Manatee County -- feature disabled in election setup!
Escambia County -- feature disabled in election setup!
Okaloosa County -- no information.
Orlando Sentinel, Orlando, May 6, 2001 "New system fumbles votes."