I also wonder if this isn't a preemptive strategy to provide credibility to the inevitiable "we wuz robbed!"
They sounded like this in 2004, too, then started up with the accusations of 'foul' shortly after they lost. First, claim that they were winning--and when they lose, claim they were cheated.
Oh yeah, it's part of it too. They will never ever admit that the american people have rejected them and their ideas. It will always be a stolen election mantra.