Electronic voting needs a reliable audit trail

IF I withdraw money from an ATM machine, the money I requested comes out. I also get a receipt showing details of the transaction. My next bank statement will also show the date, the ATM used, and the amount I withdrew.

If I buy something online, I get an email acknowledging the order. I will get my goods in the post. My next Visa bill will show the online transaction.

If I electronically vote, I will get no confirmation email, no statement and no indication that the preferences I have selected are the ones that are saved.