For those who think vote rigging is a crazy conspiracy theory:
KY Election Officials Arrested, Charged With ‘Changing Votes at E-Voting Machines’
Five Clay County officials, including the circuit court judge, the county clerk, and election officers were arrested Thursday after they were indicted on federal charges accusing them of using corrupt tactics to obtain political power and personal gain. […] According to the indictment, these alleged criminal actions affected the outcome of federal, local, and state primary and general elections in 2002, 2004, and 2006.
This was old-fashioned vote buying.
A candidate would pay a fixer to get them some votes. The fixer would arrange for corrupt election judges, and also bribe some voters. The voter would come in, and then leave without finishing voting. The corrupt election judge would then go change the vote.
To make a federal case, they included racketeering and wire fraud charges. The wire fraud was that the conspirators had telephoned the results to the Secretary of State, know that the results were fraudulent.
This could as easily been done with paper ballots.