Story here.
Seems the scam kicks into motion if you sign a petition on the street. The activists then turn in stacks of registrations with the petitions:
Ms. Shuvalova was signed up — possibly without her knowledge — by an organization circulating a petition for a 2013 ballot initiative to stop a massive condominium development on the San Francisco waterfront. A signed registration card was submitted with the petition to qualify Ms. Shuvalova as a petition signer, said John Arntz, director of the San Francisco Department of Elections. Activists often hand in stacks of registration cards with their petitions, he said. Election officials say they conduct routine cross-references of voter registration information with databases at the state’s Department of Motor Vehicles and the secretary of state’s office but did not flag Ms. Shuvalova as a noncitizen. The box for “vote by mail” was checked on her registration card, and the county began sending her ballots. County records show she received nine ballots but never voted.
