They don't really believe this. Their only hope is to convince the public it's true. It isn't going to work though.
Sure, a lot of hardcore, far left libs are happy right now. They think it's a done deal. But a lot of these large gatherings the media is showing are organized and staged, just like Antifa & BLM. In other words, it isn't organic.
The media just wants Trump supporters to feel outnumbered and demoralized. It's not true though. We're actually the massive majority, and that will show when the REAL election results are revealed.