if I define open as, "your campaign would have to register and be verified"...then it abides by the state/fed rules for these datasets. I can't just throw the data on github.

Can you comment on this a bit?

It's not obvious to me how open access to this data would be intrinsicly bad, but I suppose that relies on the assumption that it's equally available to all parties (which may not (definitely not?)) be the case.

any pointers to the statuatory/regulatory guidelines would be appreciated.

The first question I ask people when talking about this project is, "Do you know your voter information is public?" About 85% are shocked and in horror that this information is available. Outside of a campaign, it is hard to say if the public would support it.

I've chatted with a two different lawyers over here in Ohio...and both have advised strict security and election/campaign use only.

Here's a good list:

http://nationbuilder.com/voterdata

a good overview, yes. For example, NY says "Election purposes only", but fails to mention that each infraction is a misdemeanor. And, Ohio is wrong. Ohio is campaign/election use only, also with the misdemeanor kicker.