TESTING. People gather at the Brokenshire College auditorium on February 18, this year to see how the Precinct Count Optical Scan (PCOS) machine works. (davaotoday.com photo by Jose Hernani)

TESTING. People gather at the Brokenshire College auditorium on February 18, this year to see how the Precinct Count Optical Scan (PCOS) machine works. (davaotoday.com photo by Jose Hernani)

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