Went to a conference in 1993 or thereabouts, put on by a now defunct organization called "CPSR" (Computer Professionals for Social Responsibility). I rememeber Phil Zimmerman was a speaker. Anyway, one of the topics was the problem of electronic voting.

About 10 years later...

Underhanded V Contest http://graphics.stanford.edu/~danielrh/vote/vote.html

(If I remember correctly, the "Underhanded C Contest" came later.)

http://lcamtuf.coredump.cx/soft/vote.c

Now, a Microsoft SDK with a catchy name, "Defending Democracy".

What next?