The voting machines worked as advertised...This is how the votes were manipulated....
Many of the voters, it seems, had no idea that their votes were manipulated after they'd left the touch-screen voting machine. While the Early Voting scheme involved finding voters who might wish to be paid to have their vote cast a certain way, the Election Day scheme, carried out in primary and general elections in at least 2004 and 2006, was accomplished by taking advantage of a "feature" on all DRE (usually touch-screen) voting systems and "voter unfamiliarity with new voting machines."
Essentially, they tricked voters into leaving the 'booth' after pressing the "Vote" button on the ES&S iVotronic. That button, does not actually cast the vote, as one might think (and as these voters were told), but instead, it brings up a review screen of the voter's "ballot."
Instructing the voters that they were done, the conspirators then, after the voter had left, would change the voters' votes as they saw fit, before finally pressing the "Cast Ballot" button.
\So...there was no problem were the machines themselves..only with idiot users...