I f guys were able to vote more then once with same ip adress, then these other guys just needed one computer with the right programm voting every minute for him. So even if dan got a 100 votes a day, they could get with one computer 1000, if they use a few computers...
If they just canceled all votes, that were send more then once from the same computer, then its possible for someone to have more votes. People have 3000 facebook friends...yes dan has alot of people that follow, but how many people voted every day?!