User blog comment:Ryan Stoppable/"Phineas and Ferb" Nominated for Kids' Choice Award/@comment-3392706-20110215171750/@comment-961279-20110216084455

If the people who set up the website don't have it set to log where a vote comes from (usually the IP address of your computer), they can't prevent a person from voting more than one time. Others might temporarily store logging information to limit how many times you can vote during a certain period, like once a day.

Also, if I remember right, either the KCA site or the BAFTA Kids Choice site never said when voting ended and voting was allowed right up to air time last year, so who knows how many of the votes were cast after they stopped counting.

If they really aren't restricting people to just one vote, it's pretty much a given that they expect people to vote multiple times.