That book was written when they had paper based voting machines; rolls of paper behind it, if memory is correct.
They had boxes to hold the result, but they still went missing/got stuffed, etc.
Get that book and read it, its really informative.
The machines at the time were either punch card or pull-lever and both were rigged... the punch card "voting" was done by the League of Women Voters (a RAT subsidiary) to change elections as needed and was caught on video by the books writers.
The 2000 race was also caught being "fixed" when the people stopped the punching of votes for Gore although by that time the ballot was larger than the original IBM punch card the fix is the same.
Everyone here needs a copy of that book before it disappears ,, I got mine used on Amazon for $0.01 plus shipping , they have a website where you can read it for free .. VOTESCAM.ORG