PowayVotes now has the entire list of registered voters for San Diego County. It took a bit of Perl scripting to get the Poway voter list out of that, but now it is ready. This information includes the list of elections that people have previously voted in and, more importantly, those who have not voted in a while. All the group needs now is money to send out fliers to encourage people to vote in the upcoming election.
No idea yet how to do that on the website.