Scanner should give warning signal for blanks
When you feed your vote into a scanner, the screen on the scanner should warn the voter if any of the races/ ballot measures were left blank. The voter should then have the option to confirm this was an intentional abstention or be given the option to cancel the scan and go back to the voting booth to complete the ballot.
With a multiple page ballot printed on both sides, it is not surprising that people accidentally may have missed the Senate race especially when placed in a bottom corner.
Craig Booth, Fort Lauderdale