Use only publicly observed hand-counting of paper ballots in all elections. End all involvement of programmable devices (computers, etc.) in voting and vote counting (including downstream tabulation). It is impossible to see what is going on inside the machines, so machine voting/vote counting is inherently non-transparent and inherently insecure. We even have plenty of examples of computer systems (election and otherwise) being hacked.
All voting to be done by marking paper ballots (not punch cards). Ballot counting to be done under observation of any citizen(s) who want to be present for the count. Ballots to be kept secure for use in any recounts that may be needed. This will eliminate the fraud resulting from electronic machine voting.