Strange Robo-Poll

I just got a strange robo poll on the Massachusetts governor's race. It was a woman's recorded voice asking if I support Deval Patrick to press one; Chris Gabrieli, press two; Tom Reilly, three; undecided four. I pressed one and got a "thank you" and a dial tone. No demographic questions at all. No real survey would omit those.

I'm wondering what would have happened if I had chosen another candidate. Is someone testing their own messages or would I have heard something negative about one of the candidates?

Anyone else get one of these and try something different?