In the OP's video, when a reporter asked Ron Paul to elaborate on his allegations of fraud, he brushed it off saying,
"I don't know anything. It's just sort of an instinct, hearsay stories, verbal stories that you hear, and the kind of things we heard about up in Maine."
Yes, Republican voter fraud is the only thing which can explain the delegate count to date:
Romney: 455
Santorum: 199
Gingrich: 117
Paul: 64 (less than 10% of the total delegate count)
ADG