Just because the Democrats seem to be unravelling now doesn't mean they can't make a comeback. When the Republicans get too cocky, they often shoot themselves in the foot, and you know what happens after that.
So even when you read headlines like Democrats Seethe After Georgia Loss: ‘Our Brand Is Worse Than Trump’; and you hear Nancy Pelosi encouragingly say that her party should stand by her because "I think I'm worth the trouble -- don't laugh or get too overly confident. The Dems always manage to come back, thanks to the Republicans. Let's not give them the opportunity this time.