There's an outside chance that it's not even local fans messing with the voting.
In 2012 A rapper who goes by the name pitbull had a deal to visit a Wal-Mart that the fans voted for by liking the store on facebook. A writer from the Boston Phoenix started a campaign to send him to the farthest Wal-Mart they could. They got to around 70,000 likes, for a town with around 6000 people.
I must say I developed some respect for him when he took it really well and went to the Kodiak Wal-Mart. Pretty cool, and apparently the locals were very happy since nobody plays Kodiak.
http://knowyourmeme.com/memes/events/exilepitbull
https://www.youtube.com/watch?v=ROoLGbqvLbM
Steve B