Kentucky Officials "Changed Votes At Voting Machines"
The indispensible jamie found a report out of Kentucky of exactly the kind of shenanigans that voting-transparency advocates have been warning about: a circuit court judge, a county clerk, and election officials are among eight people indicted for gaming elections in 2002, 2004, and 2006. As described in the indictment (PDF), the election officials divvied up money intended to buy votes and then changed votes on the county's (popular, unverifiable) ES&S touch-screen voting systems, affecting the outcome of elections at the local, state, and federal levels.
If it is impossible to catch how did they catch these guys? Election fraud has always happened and always will, no matter what the method of voting. And some people will get caught while others get away, just like it's always been. There are reasons to oppose electronic voting - and reasons to support it. At least be a little realistic in your opposition.
Want to get rid of election fraud? Get rid of secret ballots. You don't need a secret ballot to have an election.
Identify the valid reasons why people want secret ballots, find other means to alleviate those concerns, and get rid of the secret ballot. That's the only way to have a fair election. Considering that current election methods are not proof against corruption, there is no reason to think that those who are in power represent the popular vote, and therefore, their election does not grant them any sort of moral authority to speak for anyone. May as well claim that your right to wield power came from the flip of a coin, it holds no less validity.
-1 Uncomfortable Truth