Yes, the site is structured to only allow someone to vote once per day, however it is possible to "beat" the system if you really try.  I can track hits to the site by IP address and audit that way, <snip>
Brent,
I'm afraid that wouldn't work either. I voted once and my wife voted once. We both use the same computer. I don't know who she voted for and neither does she know how I voted.
-Larry