Plausibility
Seems that the Russians were trying to obsfucate and influence the election. Did they manage? Dunno; should probably investigate.
Did they influence it sufficiently to change the result? Dunno again (possible given the very small margin in the 3 swing states) but too late now.
Are electronic voting systems A Bad Idea? Hell yes. Obligatory: http://xkcd.com/463/
Are the major scandals all those who were denied their right to vote, and those who don't bother to show up? Yup, IMHO