I agree that there are a whole new mess of problems that can come with electronic voting. But I think that when you compare things across the board they balance out, if not lean slightly in the favor of electronic. I mean, Starkiller quoted the percentages on votes completely thrown out in 2000. They were discussing that the other day on NPR and I was totally shocked. Its just understood I guess, that about 3 percent of votes nationally are just not counted, for a number of reasons.
So any major loss, or problems with Electronic voting would be eventually reduced to the margin of error present now. The benifit still exists that the system is nationalized. It seems more efficient. As others noted, it provides ease and confidentiality of voting for the disabled.
I just think that the way things are now, there is just way too much room for error. Regardless of how inept a person has to be to "mis-punch", etc. a ballot now - the problem still exists. I think that if its reduced to a simple touch screen, or something similar, (I saw some for the primaries that were touch screens, but I dont know if this is exactly what would be implemented) the room for error is decreased. Ill go ahead now and say that you could decrease the room for error RIGHT NOW, by simply educating people on how to properly cast their ballots. I know it seems like holding people's hands through the process, but come on, if the problem is present than it needs to be addressed.

-Lethe