Who's Calling?

I just had the oddest experience. I received a phone call from someone, asking me to vote for certain candidates for school board. Out of curiousity, I asked the voice on the phone who he was calling for. Who was recommending I vote for the three candidates he suggested? I asked in three different ways for this piece of information. Twice he said, "I'm calling about the school board election." Once he said, "Volunteers."

You'd think this would be an easy question to answer.