As a person who has written many a computer program in my day, i can tell you that electronic voting is a foolishly stupid and dangerous idea. Seems the Government accountability office (GAO) a non-partisan government watch dog group agrees with me. Read the report here (pdf). For more reasons to wake up screaming at night try here, or here, or here.

[C]oncerns about electronic voting machines have been realized and have caused problems with recent elections, resulting in the loss and miscount of votes.

How easy would it be to just type a couple of lines of code, and blam the person you want always wins. And with no paper trail there is no way to even confirm that the vote was even made! Even Arnold had problems with electronic voting.