I don’t think that they believe they have any chance of changing the outcome, these are simply distraction/disruption tactics designed to divert the energies of the new administration away from their essential tasks.
In the long run I think this will be good for us. Right now they’re all chanting “election was hacked!” and stuff like that. This will prove that Trump won it fair and square. There’s no possibility of it actually being flipped. Maybe in Michigan, but not elsewhere.