http://en.wikipedia.org/wiki/Washington_gubernatorial_electi...
http://en.wikipedia.org/wiki/United_States_presidential_elec...
http://en.wikipedia.org/wiki/U.S._presidential_election,_200...
I'm not saying electronic is definately the way to go. I'm just saying that paper ballots also have big problems, and that one can protect reasonably well against pure software hacks.