Mad Maxine senses the rejection of the left wing by a very significant portion of the black voting population. Her wild pronouncements are a vain attempt to curtail that trend
The loss of black voters can’t be ascertained in normal polling
One yuuuuuuuge problem is that all (except for Rasmussen) are doing their polling via cell phone calls. Problem is, who answers their cell phones from numbers they don't recognize on their caller ID? I know I usually don't and those very few times I do answer unknown callers I almost always regret it because they are usually pitching me something. Therefore the ones answering their cell phones tend to be more naive than average---typical democrats which weights the polling in that direction.