US Government Accountability Office confirms e-voting problems

This FCW article by Michael Hardy includes:

GAO found that some e-voting systems do not encrypt ballots cast or audit logs, and either one could be altered without detection. In addition, some machines are insecure enough that someone could alter a ballot's appearance so that votes cast for one candidate would be recorded for an opponent.

GAO also found that vendors sometimes installed uncertified versions of their software in local voting jurisdictions.

Note: democratic elections need voter verifiable ballots. As long as there is not a voter verifiable ballot there is room for tampering with the election, whether transparent and accountable (Meaning FLOSS) software is used or not.