Some interesting comments on electronic voting over at Politech.

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It is important to differentiate between "electronic voting", which has immense promise to make voting more accessible to many people, as well as improving the efficiency and accuracy of the voting process, and "Direct-Recording Electronic" voting systems, a type of electronic voting system that record votes _only_ electronically, with no human verified physical record, which raise many concerns, and have had numerous operational problems in actual use, leading to (for example) decertification of DRE's in California.
It's critical to be aware that there are many electronic voting systems that provide all of the benefits that the LCCR cares about (prevention of overvotes, reduction of undervotes, spoken prompts for hearing or reading impaired voters, support for multi-lingual ballots, voters like touchscreen voting), but that are not DRE's."